Given the sudden trend toward rules-lite settings like Castles and Crusades that seems to have gained a lot of impetus this year, I think D&D is going to be riding out a storm (perhaps one that fits in a teapot - we'll see - but a storm nontheless). D&D won't become more rules-lite because it has now staked out turf as an utterly comprehensive game system.
The upshot is that for the time being, it's probably not the time for WotC to come out with a new edition. They shouldn't shake the branches when a lot of people are already thinking of jumping. Just stay static and wait for that trend to expire as companies fold from lack of experience, and players return to the classic. (in my case, I probably won't return from C&C, but lots of people will eventually return to D&D - as long as they're still familiar with the existing system).
Unless there's some way of pulling in lots of players specifically with a new edition, I'd just keep selling the 3.5 brand for a while.
The upshot is that for the time being, it's probably not the time for WotC to come out with a new edition. They shouldn't shake the branches when a lot of people are already thinking of jumping. Just stay static and wait for that trend to expire as companies fold from lack of experience, and players return to the classic. (in my case, I probably won't return from C&C, but lots of people will eventually return to D&D - as long as they're still familiar with the existing system).
Unless there's some way of pulling in lots of players specifically with a new edition, I'd just keep selling the 3.5 brand for a while.