Windows Vista RC1 was just posted on Microsoft Connect. (~2:45 EST)
Screenshots and impressions of RC1 will be posted shortly once a few staff members get the build downloaded and installed.
Update: Jim Allchin has released his RC1 statement. Click Here for the whole letter.
Screenshot: Screenshots (Winsupersite)
View: Windows Vista Blog Posting
Download: Windows Vista RC1 (Connect Users Only)