Sony UK rep says (on Facebook) A9x will be flagship
Sony UK's Paul Genge posted on Facebook that the next high-end Alpha dSLR will be in the "A9x" series, not in the "A7x" series as previously rumored. This makes sense but the "flood the market" strategy Sony has been following the last couple of years makes just about every rumor/speculation less unlikely. The quote and a long and winding discussion at the dpreview Sony forums.
Now that the Alpha A700 finally got its "replacement" in the A77, it is the turn of the full framers to get replaced. Both the A900 and A850 had been formally discontinued, and there are rumors of a 36mp full frame sensor, and Sony just went to 24mp at APS-C.