I've been a KM > SONY believer for a long time. Had the KM 7000i many years ago as starter doing weddings etc to pay for it. Always had well designed user interfaces, very ergonomic to handle. First to come up with a decent working autofocus system, and always nice, if a somewhat limited range of nice lenses as well. I'm still using the 70-300 from my KM 7D at 6 mp ( which is now the IR modded body ) on the SONY SLT A77v at 24 mp. Motorsports still gets me views of rust spots on wheel nuts on cars doing 150 kmh at 50 meters away.
Don't think I'll be buying this though, no real justification for it .... but it would be nice
Better buy another Lotto ticket or two ,,,
Only drawback is still no PC control option for astro although wireless via a mobile .... maybeeee .....