TechCrunch has obtained screenshots of the as yet unreleased Google Calendar, called CL2. The leak came via Google's closed beta of about 200 participants. Apparently CL2 is a long way away from launch, but there are some meaty details in Mike's post.
CL2 looks to be a very strong product from Google (which has by no means been a given over the past year). Plus it seems to me that Google's much-anticipated Web Office Suite is well on the way to becoming a reality!