The rumoured Sony HD video DSLR and some mirrorless APS-C sensored cameras with HD video similar to m4/3 is no longer a rumour and the Sony website has some details about them. Although I believe the full announcement has yet to be made. It is not at all clear at this point whether actual products will be displayed, or if they will be displayed as concept models and the actual cameras announced later.
http://news.sel.sony.com/en/press_r...digital_cameras/cyber-shot/release/56463.html
http://news.sel.sony.com/en/press_r...digital_cameras/cyber-shot/release/56463.html