As I say in every 4e thread, if the reviews and previews (and maybe flipping through the books in a store) make me think it's good, I'll buy it eventually. I don't think it'd be a good business practice to release 4e before 2008 or so (as a large and influential segment of the gamer community thinks 3.5 came out to soon), but I won't refuse to switch to mechanics that I think are better out of spite.