We have updated both our matrix server and the web client at meet.physik.fu-berlin.de. Among the changes the user-facing changes are

• message pinning,
• url previews, and
• support for themes.

We'll be updating our documention shortly, to get the screenshots back in line with the new looks.

If you notice any problems problems or have any questions please contact us in our support room or write us an email at zedv@physik.fu-berlin.de.