TYPO3 v14 LTS: What You Need to Know Before the Upgrade on April 21

On April 21, 2026, TYPO3 v14.3 will be released as a Long-Term Support version. Nine days later, free support for TYPO3 v12 will end. Two dates that are relevant for every company with a TYPO3 website. Here’s what you need to do now.

What happens on April 21?

TYPO3 v14.3 LTS will be officially released on April 21, 2026, at 7:00 p.m. LTS stands for Long Term Support. This means: This version will receive free security updates and bug fixes until April 2029. After that, paid Extended Support (ELTS) will be available until April 2033.

Version 14.0 has been available since November 2025. Version 14.2 was released on March 31, 2026. From this point on, no new features will be added (feature freeze). The team focuses on stability and bug fixes. This is exactly what makes the LTS version suitable for production use.

For businesses, the rule is: There is no reason to switch to v14 before the LTS version. Sprint releases like 14.0 or 14.1 are intended for developers and testers. The LTS version is the right time for production environments.

Why April 30 is just as important

On April 30, 2026, free community support for TYPO3 v12 LTS will end. From that date on, there will be no more free security updates. Those who stay on v12 have two options:

1. Upgrade to v13 or v14
2. Sign an ELTS contract (Extended Long-Term Support)

Starting in April 2026, the ELTS contract for v12 will cost 3,200 euros per year and license. Presales have been available via my.typo3.org since April 1. Members of the TYPO3 Association receive discounts. The extended support is valid for up to four years.

In our experience: Most companies don’t know when support for their TYPO3 version expires. We see this in almost every project. The website is running, so nobody touches it. The problem only becomes apparent when a security vulnerability is made public and no patch is released.

What exactly does TYPO3 v14 offer?

We won’t go into every technical innovation here. Most of it concerns developers and integrators. For you as a website operator or decision-maker, the following points are relevant:

New Backend

The user interface for editors has been fundamentally redesigned. Modules have been given new, more intuitive names. The page module is now called “Layout,” file management is called “Media,” and workspaces are called “Publish.” It may sound like a minor detail. In practice, it makes navigation easier for editors who don’t work in the system every day.

Improved Translation Management

TYPO3 v14 features a new guided translation workflow. This is particularly relevant for companies with multilingual websites. Instead of viewing all languages simultaneously, the editor can specifically select the language they wish to edit. For websites with five or more languages, this saves a significant amount of time.

Modernized template system

Fluid 5 is the new template system. For editors, this doesn’t change anything directly. For developers and agencies, it means: templates are more cleanly structured and easier to maintain. This has a long-term impact on support costs.

Technical Requirements

TYPO3 v14 requires at least PHP 8.2. PHP 8.3 is recommended. This is a point that many overlook. If your hosting is still running on PHP 8.1 or older, you’ll need a PHP update first. This isn’t a problem with most hosting providers, but it needs to be checked.

Our Upgrade Checklist for SMEs

We use this checklist in our own projects. It applies to the switch from v12 or v13 to v14:

1. Check PHP version

Ask your host or check the TYPO3 backend under “Environment” to see which PHP version is running. TYPO3 v14 requires at least PHP 8.2. If you’re on PHP 8.1 or older: Perform the PHP update first. In most cases, this is a setting in the hosting panel.

2. Perform an extension audit

This is the most time-consuming step. Every installed extension must be checked for compatibility with v14. Some extensions already have a compatible version. Others do not. And some will never get one because they are no longer maintained.

In practice, this is how it works: We go through the list of all installed extensions and check on extensions.typo3.org to see if a v14-compatible version exists. For extensions without an update, we look for alternatives or check whether the functionality is now included in the TYPO3 core.

3. Checking Custom Code

Many TYPO3 websites have custom extensions or modified code. This code must be checked for breaking changes. These are changes in the TYPO3 core that break existing functionality. In v14, some old hooks were replaced by new events (PSR-14). If you have custom code, you’ll need a developer to check it.

4. Set up a test environment

Never upgrade directly on the live website. Always test on a copy first. That sounds obvious. In practice, however, we regularly see agencies working directly on production. That works fine—until it doesn’t.

5. Back up the database

Before every upgrade, make a full backup of the database and all files. If something goes wrong, you can revert to the previous version in just a few minutes.

6. Run the Upgrade Wizards

After updating to v14, the Install Tool includes upgrade wizards. These automatically adjust the database and configuration. In v14, a new wizard for the Scheduler has been added that migrates the storage format of the tasks. This wizard is only available in v14. If you skip it, you’ll run into problems later.

7. Resolve deprecations

TYPO3 marks obsolete functions as “deprecated” before removing them. In v14, some of these functions have actually been removed. This primarily affects developers. But editors will also notice if a module is suddenly missing or a field is no longer there.

Our suggested timeline

| Timeframe | Action | | :—- | :—- | | Now (April 2026) | Check PHP version, create extension list | | Starting April 21 | Install v14.3 LTS on test environment | | May 2026 | Extension audit, check custom code, testing phase | | June/July 2026 | Upgrade to production if tests pass |

For those on v12 who cannot upgrade immediately: Sign the ELTS contract and plan the upgrade at your own pace. Better to test for three months longer than to have a broken website in production.

What we see in practice

Most of the TYPO3 projects we manage run on v12 or v13. In every project, we ask the same three questions:

1. Which extensions are installed, and are they still being maintained?
2. Is there custom code that needs to be adapted?
3. How old is the PHP version on the server?

The answers determine the effort required. For a standard TYPO3 website with five to ten extensions, we estimate four to eight hours for the upgrade. For larger installations with custom extensions and multiple languages, it can easily take 16 to 24 hours.

The biggest mistake: waiting and doing nothing. The longer you wait to upgrade, the bigger the leap becomes. Anyone switching from v10 to v14 has significantly more work than someone coming from v13. Every major version skipped increases the effort required.

ELTS: When It Makes Sense

ELTS (Extended Long Term Support) is the right choice if:

• Your system is running stably and you don’t have an upgrade budget for this quarter
• One or more critical extensions are not yet compatible with v14
• You’re currently in the middle of another project and don’t want to take any risks

ELTS is not a substitute for an upgrade. It is a bridge. You are buying yourself time to plan the upgrade properly. That makes sense. But using ELTS as a permanent solution becomes more expensive and riskier with each passing year.

For v12, the price is 3,200 euros per year. For a term of up to four years, that’s a maximum of 12,800 euros. By comparison: A clean upgrade to v14 costs between 500 and 3,000 euros, depending on complexity. The math is clear in most cases.

What this means for you

If you run a TYPO3 website, check these three points:

1. Which TYPO3 version is running? You can find this in the backend at the bottom right or in the Install Tool.
2. Which PHP version does your server use? This is also listed in the Install Tool under “Environment.”
3. Who handles the technical support for your website? If no one does: Now is a good time to figure that out.

April 21 is not a deadline by which everything must happen immediately. But it is the starting point. From this date on, there is a stable foundation for the upgrade. And April 30 is the last day on which v12 is still supported at no additional cost.

Anyone who ignores this risks having a website without security updates. This doesn’t just affect the technical side. It also affects data protection and liability.

Not sure if your TYPO3 system is ready? I’ll check it for you. Data-driven, no empty promises. Request an initial consultation.

Dennis Hüttner Waterproof Web Wizard GmbH

Sources

1. TYPO3 Association: Join the TYPO3 v14 LTS Launch Celebrations (March 2026) news.typo3.com
2. TYPO3 Association: Extended Long-Term Support (ELTS) for TYPO3 v12: Presale starts (March 2026) news.typo3.com
3. TYPO3 Association: New ELTS Pricing for TYPO3 v12 (October 2025) news.typo3.com
4. jweiland.net: TYPO3 14.0: Release, LTS support, and important changes jweiland.net

FAQ

How much does a TYPO3 upgrade from v12 to v14 cost?

That depends on the complexity of the website. A standard website with five to ten extensions requires four to eight hours of work. For larger installations with custom extensions and multiple languages, we estimate 16 to 24 hours. At an hourly rate of 108 euros, the cost ranges from 432 to 2,592 euros. Every website is different. A blanket statement is not reliable.

Can you upgrade directly from TYPO3 v12 to v14?

Yes, a direct upgrade from v12 to v14 is technically possible. TYPO3 provides upgrade wizards in the Install Tool for this purpose. However, the effort involved is greater than when upgrading from v13 to v14, because more breaking changes and deprecations need to be addressed. We recommend using a test environment and allowing sufficient time for this.

What happens if you’re still using TYPO3 v12 after April 30?

Your website will continue to run. However, there will be no more free security updates. If a security vulnerability is discovered, you will no longer receive a patch. This poses a risk to data protection and the stability of your website. You can sign an ELTS contract to continue receiving updates. It costs 3,200 euros per year.

When is the best time to upgrade to TYPO3 v14?

Not on the release date. Wait one to two weeks after the LTS release on April 21. During this time, the first bug fixes will be released. Plan the upgrade for May or June 2026. This will give you enough time for testing, and your extensions are more likely to be compatible.