Where are / will the details of the new server be?

The server is at https://wikimedia.modular.im/ (but users won't interact with that directly), the default client is at https://wikimedia.riot.im/.

For myself: Riot Web is licensed under Apache-2.0 license so screenshots should be fine for Commons. (I'm working with Tgr for the docs.)

Oh, glad to hear, @revi, I'm happy to help edit the docs (I just got back from paternity leave), I'll look for updates here

Some of the official pages are pretty useful:

• Riot help page (in a FAQ form, very terse but contains lots of info)
• Matrix FAQ (mostly not relevant to using Riot but lots of background information on the project & technology)
• Moderation FAQ
• IRC bridge end user FAQ, contains some information on IRC integration such as changing IRC nicks

This third-party manual is very outdated but might be a good template for a new user tutorial.

One of the annoying things about the Riot web client is that it loads quite slowly (as in, the initial downloading of all JS is slow). Someone has packaged it now as a browser extension (Firefox, Chrome, Github); that's probably worth calling out in the documentation.

While the parent has been closed, the documentation would still be quite useful for users of the public, federated Matrix servers such as matrix.org.

@Legoktm has recently introduced mjolnir to Wikimedia channels so we should cover that in the moderation docs.