Sigma announces DP1 for this spring
This opens the possibility that the other major digital camera manufacturers will produce something similar. Many folks with DSLR systems want a compact camera that can shoot raw and hold up well under low light conditions.
This has a fixed focal length 16.6mm F4 (28mm equiv.) lens which is probably the best focal length for the majority of situations.
It might even dissuade a quite a few people from buying a DSLR, which although offering the ability to change lenses, most time you don't want to carry around all that weight.