I guess some people are looking forward to a cheaper Triton (LE). The Power Station does not seem much of an advance for a system that has been out for several years, although I will assume that it will be expandable to at least 80MB. If it had a Karma option, then it would perk my interest.
Consensus is that the Karma is not an arranger, but I use mine pretty much as one. I expect a software Karma for the Mac to show at NAMM. This might allow Karma functionality to be added to any keyboard, and quasi-arranger functionality to be added to non-arranger keyboards, e.g., the Motif.
But what I really want is a lightweight arranger with 76 keys, real-time continuous style control (e.g., of swing factor), vocal harmony, Akai-sample compatiblity, and lots of sample ROM. Not this year, I guess.