Unity Announces 4.0

Unity 4, the next generation of the Unity development platform, includes all-new character animation technology, more publishing options, shadows for mobile games, DirectX 11 support and many more key updates. Unity 4.0 is the first release in the Unity 4 series that will offer critical new features. Pre-order Unity 4 today and join us on the quest to a truly democratic AAA game engine!

For more information:
http://unity3d.com/?unity4

To pre-order 4.0:
https://store.unity3d.com/

There is a thread in Gossip already discussing the subject:
http://forum.unity3d.com/threads/140299-Unity-4-Details

*Please note that as of the time of this posting, the announcement pages are being hit heavily and my be erratic. There is an additional unformatted page here: http://unity3d.com/?unity4 which contains the basic information, but is far less pretty...