TYPO3 Developer Days 2026 | Karlsruhe

Picture more than 300 TYPO3 developers, integrators, and open-source enthusiasts in one hotel in Karlsruhe, with conversations repeatedly coming back to two topics: TYPO3 v14 and Visual Editing. That was the atmosphere around T3DD26.

I was there for the opening day, although unfortunately I had to cut my trip short because I became unwell. Even in that limited time, the direction of the conversation was hard to miss. TYPO3 v14 was everywhere, Visual Editing generated plenty of interest, and AI was increasingly being discussed as something practical rather than experimental.

TL;DR: TYPO3 Developer Days 2026 took place from August 6–8 in Karlsruhe under the motto “Next Gen TYPO3 – Exploring Tomorrow.” The three-day program brought together technical sessions around TYPO3 v14, AI-assisted development, Visual Editing, and the wider editor experience. T3Planet and CKEditor were also part of the program with a session focused on multisite content editing and editor capabilities. T3DD27 is already scheduled for August 5–7, 2027, again in Karlsruhe.

More than 300 developers, integrators, contributors, and TYPO3 enthusiasts gathered at the GenoHotel for three days of talks, workshops, technical discussions, and community exchange. From what I experienced on the first day, and from the sessions that followed, v14 clearly set the direction for this year’s Developer Days, while Visual Editing and AI showed where much of the conversation around TYPO3 is heading next.

The Warm-Up: A Day Before the Doors Opened

T3DD26 officially began on August 6, but for some attendees, the technical deep dive started a day earlier.

On August 5, an optional hands-on workshop gave integrators a practical introduction to working with TYPO3 v14. The session covered areas such as SitePackage setup, Site Sets, the PAGEVIEW object, Fluid 5, and newer approaches to building TYPO3 projects.

Rather than simply introducing new features, the workshop showed how v14 is changing some of the workflows TYPO3 integrators have relied on for years. Several established approaches are becoming more streamlined, with less repetitive configuration and a stronger focus on reusable, maintainable setups.

It was a useful preview of what would become one of the biggest themes of T3DD26: v14 is not just another TYPO3 release. It is changing how developers and integrators think about building TYPO3 projects.

Day 1 & 2: v14, AI, and the Editor Experience

Source: Markus Luigs/TYPO3

Once T3DD26 got underway, TYPO3 v14 quickly became one of the main threads running through the technical conversations. On Day 1, I found the discussions particularly interesting because they were less about individual features and more about how some of the familiar TYPO3 workflows are changing.

The new v14 APIs and development approaches came up repeatedly. Things like Site Sets, PAGEVIEW, Fluid 5, and the new ViewHelpers may sound like individual technical updates, but together they point towards a more streamlined way of building and integrating TYPO3 projects. 

The pre-conference integrator workshop had already highlighted this shift, including how PAGEVIEW can replace some of the configuration developers have traditionally relied on with older approaches.

Another strong topic was AI in the development workflow. The conversation felt much more practical than the usual “what can AI do?” discussion. Sessions explored areas such as running AI models inside PHP, working with AI agents and Git worktrees, and thinking about how AI can be introduced safely when real production code is involved.

While I couldn't experience the rest of T3DD26 in person, the program continued with many of the same themes.

Day 2: AI and Visual Editing Take Center Stage

The second day pushed these discussions further. AI-assisted development and Visual Editing were particularly prominent, with sessions ranging from AI-native search and local AI models to practical questions around safer AI workflows.

At the same time, Visual Editing increasingly stood out as one of the key community topics. The discussion was not simply about adding a visual interface to TYPO3, but about giving editors a more intuitive, page-builder-like experience without losing the flexibility and power developers and integrators need.

That combination - v14 changing development workflows, AI changing how developers work, and Visual Editing changing how editors work - became one of the clearest themes running through T3DD26.

A Closer Look: Content Editing Unlocked by T3Planet

Source: Markus Luigs/TYPO3

On the final morning, Saturday, August 8, T3Planet was part of a session that brought together many of the conference's discussions around the future of content editing: “Content Editing Unlocked – Multisite, Visual Builder, and Editor Capabilities,” presented by me, Jürgen Pietschmann, T3Planet product consultant, together with Ondrej Chrastina from CKEditor.

Ondrej did an excellent job of presenting and explaining my part of the session, ensuring that the practical perspective and real-world experiences behind the presentation came across clearly.

The session focused on the challenges of delivering a consistent editing experience across multisite TYPO3 projects - from shared styles through Site Sets and custom icons that work correctly in production to configuring CKEditor within the new Visual Builder.

The examples came directly from real client projects and discovery calls, including the kinds of configuration details and production issues that are easy to overlook until they become a problem. The session also offered a look at what is coming next for CKEditor in TYPO3.

For me, this was a particularly meaningful part of T3DD26: Ondrej carried the presentation forward exceptionally well and represented the ideas and practical experience behind it with great clarity.

It was a fitting contribution to a conference where Visual Editing and the editor experience emerged as some of the strongest themes of the event.

Conversations Between Sessions

Beyond the sessions, what stayed with me most was how often the conversation moved from “what’s new in TYPO3?” to “what does this mean for us?”

AI came up again and again - not just as a way to work faster, but as a bigger question for agencies and freelancers. As AI makes some development tasks more accessible, I think the more interesting question is how our roles and workflows will evolve with it.

The same was true for TYPO3 v14 and Visual Editing. From the discussions I experienced and the conversations that continued around the event, it was clear that giving editors a more intuitive, visual content experience is one of the developments generating the most excitement.

The three days also ended with the traditional bowling tournament and Social Night - a reminder that T3DD is about more than technology. It is also about the people, conversations, and community around TYPO3.

Looking Ahead to 2027

T3DD27 is already scheduled for August 5–7, 2027, again in Karlsruhe.

I’m curious to see how the ideas discussed this year - particularly Visual Editing, AI-assisted workflows, and better editor experiences - will develop by then.

I’m glad I could be part of the event, contribute to the program, and see where the TYPO3 community is heading next.

Want to see what T3Planet builds around AI and editorial workflows for TYPO3?

Explore T3Planet's TYPO3 solutions or check out CKEditor to learn more about the editor behind the session.