The current Sony a7R II
Here are some rumored features about the next Sony A7R II successor from SAR3. This new camera may be called Sony A7R III (A9) and will have a 70-80 Megapixels sensor, as well as Improved IBIS.
The new released Sony A7r II (Amazon| B&H| Adorama| eBay) is now in stock and shipping in most US stores. It was the best camera of the year 2015.
See also 17 Rumored Features of Sony A7R III
Read more Sony Camera Rumors