Theia IDE 1.67.x Preview Testing

[ndoschek]

The new version 1.67.0 of the Theia IDE is available on the preview channel now. Please join the preview testing!

You can download it here:

• Linux
• Mac x86
• Mac ARM
• Windows

Update your existing installation by setting the preference updates.channel to preview.

Please respond here when you can test the preview without finding blockers, by commenting with a ✔️.
If you find any issues, please mention them in this thread and report them as an issue once confirmed by other testers.

Phase	Target	Status
1.67.0 preview available	2025-12-11	✅
1.67.0 community preview window	2025-12-11 → 2025-11-15	⛔ blocker was found in Linux AppImage version
1.67.100 preview available	2025-12-16	✅
1.67.100 community preview window	2025-12-16 → 2025-12-17	✅
Theia IDE 1.67.x Promoted to Stable	2025-12-17	✅
Docker image Publish	2025-12-17	✅
Snap updated	2025-12-17	✅

[ndoschek]

Some highlights of Theia v1.67.0 ✨

• Improvements in the debug view
  • Fixes breakpoint handling during debugging sessions and support for data breakpoints
  • Several UX improvements such as: Actions for breakpoints (edit, remove), better variable selection handling during debug sessions, add editor selection to watch
• New terminal-manager: Provides a unified terminal view with multiple pages and possibility to split terminals
  • Activate via: Settings > terminal.grouping.mode > tree
  • Then access via Terminal > New Terminal or Open View… > Terminal Manager
  • PR for more details: Terminal manager for multiple terminals in one view #16604
• Support for Slash commands
  • Slash commands are available now, type / in the chat and browse the available slash commands, e.g. /explain ...
• Updated default AI models & prompts
  • Updated defaults for Anthropic, Google, OpenAI.
  • New @TheiaDev and @TheiaDevCoder agents to use inside the theia project (see their definitions in https://github.com/eclipse-theia/theia/blob/v1.67.0/.prompts/customAgents.yml).
  • 👉 Please reset all your prompt fragments to pick up the latest improvements.
• General UI improvements
  • Rework of the AI Configuration view, more information in the AI Chat view for starters

[MalcolmMielle]

Works on my machine but I still have this problem with the font: #16569

[ndoschek]

Thanks for the feedback!
Unfortunately I still cannot reproduce that, whether on my Ubuntu 24 nor on my 25 VM. I'll follow up in the ticket 👀

[ndoschek]

We're currently investigating issues with Java extensions failing to activate when running Theia from the AppImage on Linux: eclipse-theia/theia-ide#627

[ndoschek]

As this basically can affect all built-ins we will provide a fix and release a IDE patch version.

[JonasHelming]

✅ New release works well for me (but I do not use Java)

[ndoschek]

The new version 1.67.100 of the Theia IDE is available on the preview channel now. Please join the preview testing!

You can download it here:

• Linux
• Mac x86
• Mac ARM
• Windows

Update your existing installation by setting the preference updates.channel to preview.

Please respond here when you can test the preview without finding blockers, by commenting with a ✔️.
If you find any issues, please mention them in this thread and report them as an issue once confirmed by other testers.

[sgraband]

✔️ Works for me

[jfaltermeier]

✔️

[ndoschek]

✔️

[lucas-koehler]

✔️

[CamilleLetavernier]

I just noticed an issue with the Drop Down for Model Alias in Agent Configuration view. When I try to change the model, the dropdown is not immediately showing the new value (it seems like nothing happened). Then when I switch back and forth with another alias, the new value is shown.

This doesn't seem to affect other Drop Downs; only Model Alias.

Tested on 1.67.100

[ndoschek]

Hi Camille, thanks a lot for reporting this!
You're right, this looks like a regression introduced with the recent AI config refactoring. I think I've already spotted the issue, and it should be a straightforward fix.
Given the upcoming holiday season, I don’t think this is critical enough to block the release. I'll open a PR with a fix shortly so we have it in place for the next release in January!

[ndoschek]

1.67.100 has been promoted to stable