Owning a Sony Mirrorless camera yet not sure what TTL Flash would work with it? Check out the review TTL Flash vs. Manual Flash — Two Choices for Sony Mirrorless Photographers by Paul Gero.
The key thing though is the radio control from the flash. If you simply must have full radio control from your on camera flash, currently this is the only option available for Sony mirrorless users. It also has High Speed Synch in TTL and Manual modes.
*Mitros+ TTL Transceiver Flash for Sony (ISO Hot Shoe) is currently available on Phottixstore.com.