Popular torrent client µTorrent [released a new public beta][1] earlier today. The beta is an early build of µTorrent version 1.7 and the most significant new feature is full support of Windows Vista. 

Having used the previous version µTorrent on Vista, I can vouch for its bugginess, but with the new beta most of the issues I had seem to have disappeared. In particular I the app no longer hangs and crashes on quitting.

While the main news with the beta release is the Vista support, there are some other new features along with an extensive list of bug fixes. For a full list of beta features and bug fixes check out the µTorrent forum post.

Among the significant new features are Auto uplink throttling, which adds traffic shaping capabilities -- µTorrent periodically checks upload speeds and automatically adjust your upload rate limit. 

Other noteworthy items include secondary column sorting in all list views, listing the number of downloaded piece in the general tab, and a fix for a bug where stopped or paused torrents would cause they auto shutdown to hang.

This is a beta so naturally the usual warnings apply. I should also note that some users in the forum have report problems with µTorrent, Vista and Linksys routers not working properly together.

[1]: http://forum.utorrent.com/viewtopic.php?id=21979 "µTorrent 1.7 beta 1065"