A lot has gone on in Gaim lately on my end.
First, it seems SourceForge kind of nuked our wiki, so it's moved now.. it's a real shame, but I like the new wiki a lot better, even if the older was easier to get the hang of at first. Unfortunately, it means we lost all of our design notes on there.
I've been rewriting the MSN prpl (protocol plugin), and it's in 0.63 CVS now. It has a much better structure (and an actual API!) than the old one, and also has group storage/retrieval support, MSNP7 compatibility, and by the end of tomorrow, MSN Mobile support. You'll be able to see when buddies have MSN Mobile for their cell phone or PDA setup, and page them.
I also hacked in my own little spec for buddy icons. It works quite well, but is temporary, as it turns out that MSN v6.0 will have native support for them. MSN v5.0 is currently in beta states, and 6.0 will be out around July sometime, so it'll be awhile (and several releases). I have a phase-out plan for the current buddy icons, but for now, I plan to keep them in.