Tomorrow Microsoft will be releasing their release canidate on may 5th which happen to be tomorrow. Microsoft will offer the windows 7 release canidate for free to all until june 1st 2010. Which is much longer than previous operating systems. The time period being a little over a year..The release canidate will feature updates to all even pirates which i wouldnt understand why if its free.
Personally I think its microsofts way of getting people and businesses more interested and back into windows. Becauyse more and more people are making switches to Macs and are downloading Linux.