Well an adapter for controlling aperture has been around for awhile now which gave the NEX full electronic control. The video above demonstrates how the new adapter will work, it seems like it hunts quite a bit with the 50mm 1.8 shown. There isn’t much detail on the new adapter whether the adapter will work the same with EF and EFS but if its anything like the manual focus version it will support both. The video shows an older model NEX sensor so Im not sure if the new sensor with embedded AF points will improve hunting and performance.
The price in the manual focus one linked above is $250 so I expect the adapter when it is released in a few months will be a bit more than that. Thanks to Sony Alpha Rumors for discovering the adapter.