People on this forum commonly say "buy what you need/want now and don't wait on rumors". However, I constantly hear (also from people on this forum) that "it's not the camera, it's the photographer". If so then you don't need that camera, do you? I've seen amazing pictures from cheap or weird gear, some of mine I like best were taken with a Holga.
I've done well by waiting. This is a technology field where it always pays to wait.