Originally posted by Aristophanes All the action right now is in the sub-APS-C
That's one way to look at it.
However, when the digital "revolution" started in photography some dozen years ago, all the action
was in the small sensor area.
What then has happened some six years ago was an unanticipated success of entry-level dSLRs many people upgraded to, making FT and APSC very wide-spread. And mirrorless system cameras try to carry this to a smaller package which is certainly appealing to many who did upgrade.
We're now another six years later and three things are happening at the same time now:
1. cellphone cameras replace P&S.
2. mirrorless replace/make obsolete entry-level dSLRs (Q, N1, GH, PEN, NX, NEX, X10, ...)
3. larger sensors become affordable (FF like APSC some six years ago and MF like FF some six years ago).
All three are exciting developments and will probably be complete in another six years. APSC SLRs aren't though meaning there won't be any new ones then. I may be wrong. But I don't see heavy investments anymore in the APSC SLR segment. Look what happened to FT SLRs...