There are rumors about upcoming Nex-7 successor: Sony a7000 which will have rangefinder styled body could finally get a successor early 2015. even though Sony replaces NEX-7 and NEX-6 when they announced the A6000 (read the comparison here), but A7000 with improved sensor, better body controls and $K video is always welcomed.
A7000 may have a new 24MP sensor and 4K (Ultra HD) video recording capabilities.