For those who know,
http://wl.windowsmobile.com/ is up and you can download the cab from there. Seems like a new version - v10.6.0042.1900. NO IM in this one.
For those, who don't - this is a part many are missing, especially from custom ROMs. The main feature for me is real time push email from Hotmail - which works really great. It also adds possibility to upload pictures to spaces directly from picture viewer.
Hopefully in the future they will add calendar and contacts real time sync, apple-mobileme-like, but free!