May 12th has always been the big date for the release of the products, the icons will
be all completed (no more purple dots) questions about performance (how many, how
big, how fast) can all start to be answered in the real world about lists and list
sizes.
The Launch
of Office 2010 and SharePoint 2010 is due on May 12th.
Those on MSDN and TechNet will get access on April 22nd to
start downloading.