| Hastur |
It's not all that hard to do your own conversion. I'm doing my own conversion of Savage Tide to 4e, based in Eberron - the PC's are level 15 now, nearing the end of The Lightless Depths.
So I too think that WotC would think they are better off creating new material rather than re-work old stuff. At best, one could hope for an official "conversion" document along the lines of the last hardback books they did (Elder Evils, Fortress of the Yuanti, etc).