Well... it looked to me like Pippin had done much of the stuff that GEGL was missing, and thus has what's needed to get it going. His demo was very impressive, especially once I figured out is whole presentation was zooming and panning in a single, huge bitmap. Oh, and the app he was doing it with was one he did for those nice linux nokia handhelds, so its performance is decent.

My guess would be that once the next rev of Gimp is actually out the door, he has all the parts needed to get it into the dev builds within a few months. Now, time to get it done is, as always, the killer.