README: Update for Matrix/IRC bridge down

README.md

@@ -27,7 +27,15 @@ technologies and produce Fedora CoreOS.
 
 - main mailing list: [coreos@lists.fedoraproject.org](https://lists.fedoraproject.org/archives/list/coreos@lists.fedoraproject.org/)
 - status mailing list: [coreos-status@lists.fedoraproject.org](https://lists.fedoraproject.org/archives/list/coreos-status@lists.fedoraproject.org/) (announcements/important messages)
-- IRC/Matrix: [`#fedora-coreos` on Libera.Chat](https://web.libera.chat/#fedora-coreos) (ircs://irc.libera.chat:6697/#fedora-coreos) or [`#coreos:fedoraproject.org` on Matrix](https://matrix.to/#/#coreos:fedoraproject.org)
+- Chat rooms:
+  - Matrix: [`#coreos:fedoraproject.org` on Matrix](https://matrix.to/#/#coreos:fedoraproject.org)
+  - IRC: [`#fedora-coreos` on Libera.Chat](https://web.libera.chat/#fedora-coreos) (ircs://irc.libera.chat:6697/#fedora-coreos)
+  - As of 2023-08-06 14UTC, the two rooms are not bridged together anymore thus
+    writing a message to IRC will not reach Matrix users (and vice versa). Note
+    that a lot of CoreOS developers have moved to Matrix thus the IRC channel
+    is likely to get less attention and we recommend joining via Matrix. See
+    [Matrix to libera.chat (IRC) bridge unavailable](https://communityblog.fedoraproject.org/matrix-to-libera-chat-irc-bridge-unavailable/).
+    The meetings still happen on IRC for now.
 - forum at [https://discussion.fedoraproject.org/tag/coreos](https://discussion.fedoraproject.org/tag/coreos)
 - feature planning and important issue tracking at [github.com/coreos/fedora-coreos-tracker](https://github.com/coreos/fedora-coreos-tracker)
 - website at [https://getfedora.org/coreos/](https://getfedora.org/coreos/)
@@ -63,6 +71,13 @@ happens in `#fedora-meeting-1` on irc.libera.chat
 meeting can be found here: https://calendar.fedoraproject.org/CoreOS/
 Currently, meetings are at `16:30 UTC` on Wednesdays.
 
+As the
+[Matrix/IRC bridge is down](https://communityblog.fedoraproject.org/matrix-to-libera-chat-irc-bridge-unavailable/),
+it is currently not possible to attend the meeting from a Matrix account and
+you have to join using IRC. You can use the
+[Webchat](https://web.libera.chat/#fedora-meeting-1) to temporarily join the
+meeting on IRC.
+
 ## Steps to run the meeting
 
 - `cd` to a local checkout of this repo and `git pull`