Read about it here:
No surprise really, Vista is the red headed step child that Microsoft hopes they can shove into the attic and everyone will forget about. What does it mean though? Well for everyone who is currently using Vista should seriously look at upgrading to Windows 7, Microsoft’s plan is clearly to leave the bloated rotting corpse of Vista on the side of the road for the vultures to pick at. That combined with the fact they will be discontinuing support of XP as well means that they are clearly trying to accelerate plans to get everyone on 7 and why not, it’s actually pretty good. Granted Vista set my expectations pretty low.