Yes, direct painting will be in 3.0.
Yeah, i'm just reading it now..its like Zbrush polypaint but it also stores color value for edges and faces, I hope Andrew implement this into 3.0.
There are several; approaches of painting:
1) Per vertex painting -ZBrish,3D-Coat
2) Projection painting - Body Paint, ZB, PS CS4. But Painting resolution is dependent on object size in screen space. It is not good.
3) Direct painting - every pixel in UV has some position in space. You are painting directly over UV placed in space. It gives the best quality. But problems - it is easy to project texture on object but difficult to smooth, smudge, clone. Mayebe Mudbox has direct painting but in very basic stage (texture projection, it is most easy task). But 3DC will offer full set of tools for direct painting - texture projection, clone, transform, smudge.