The first picture of Google CL2?

Could this be the first screenshot of Google Calendar?  I noticed a post on Google Blogoscoped forum of a screenshot found on Flickr.  It could be photoshopped, but it looks fairly convincing.  If this is real, the part that has got me thinking is the way it seems to be very tightly integrated with Gmail -- yet there is a completely separate login for Google Calendar "CL2".

Could this screen be a simple "heads up" view of a users calendar while a more advanced calendar system called "CL2" will provide extra functionality?  If this is the direction they are in fact going, a tightly integrated feed reader -- attached to the user's Google Reader account -- should be woven into the Gmail interface too.

Update:
Upon further inspection, this is almost certainly photoshopped.  It looks identical to Yahoo! Calendar pasted into Gmail.