Irssi 1.5
Irssi 1.5 is still under development. It is far away from release, but you can test the version in git.
I may erratically post some news here.
Useful fixes and features already committed
- Notices to channels have become their own level, similar to MSGS vs PUBLICS there is now NOTICES and PUBNOTICES for your activity and ignore rules 
Major platform changes
- Autotools was removed. Irssi can be built with Meson. 
- Some cruft was removed from the code, true colour is now always built, socks is removed, regex.h is removed. 
- IRC module is now optional, you can launch Irssi without IRC. It’s expected to find bugs in this regard! Also a good topic if someone wants to contribute (for example: move useful commands from IRC => common) 
- Github actions builds a termux package 
Potential areas of interest for development
- IRCv3 features(?) 
- Improve split window and layout switching and restoration, fix split window bug (window collapsing) 
- Support dynamic expandos 
- Coherent line meta-data architecture 
- Removal and replacement of /recode 
- ??? your ideas ??? 
Also see the unofficial Roadmap
(May 2022)