Liveside is reporting that a new installer has been released for the final Wave 2 applications to be released. According to Liveside, not much as changed but this one is the final version.

If you are keeping tabs on product numbers, Messenger is at 8.5.1302.1018 and Mail is at 12.0.1606. The download link is http://g.live.com/1rewlive/en/WLInstaller.exe