Luxigons (I kid you not)
Comments per object/item (modal window)
Motion Mixer 2.0
OpenGL improvements including motion blur previews
improved Caustics quality
Preview Render size switch (320x240/640x480)
Photoshop Exporter (say no more!)
RPF (Ritch Pixel Format) Exporter (for AFX. Combustion, DF etc)
Also, a new version of Lscript and better documentation (according to Bob Hood).
I found these features on a message board, so I who knows if it's 100% true. It's pretty much a given that a new version is on the way, though.