Sony A6700 Rumored Specification
1. AF is vastly improved with Eye tracking, you can call the cam a mini A9
2. Better low light performance, standard ISO do touch the 51200 mark
3. New 4K HDR, 4K 60p is for limited time in test versions
4. Compatible with UHS II
5. 1/8000 shutter, faster Continuous Shooting
6. 2x Improved Battery Life
http://thenewcamera.com/sony-a6700-rumored-specification/ 
Sony A6700 Rumored Spec.
1. AF is vastly improved with Eye tracking, you can call the cam a mini A9
2. Better low light performance, standard ISO do touch the 51200 mark
3. New 4K HDR, 4K 60p is for limited time in test versions
4. Compatible with UHS II
5. 1/8000 shutter, faster Continuous Shooting
6. 2x Improved Battery Life
http://thenewcamera.com/sony-a6700-rumored-specification/