New Features in the Unity 3 Free Version

Which of the new features of Unity 3 are available to the pro version only and which are included in the free version?

(I hope I have not overlooked this information, but could not find it on the Unity home page nor here)

There is a already a thread on the Unity forums regarding this that you might want to follow until it's being officially released:

Basic: No custom splashscreen, no realtime shadows, no occlusion culling, static Beast lightmapping included, ...