The images leaked this week show a fingerprint reader, confirming the dual camera setup spotted in earlier photos as well.
http://www.notebookcheck.net/Huawei-P9-spotted-online-again.160611.0.html
There is nothing exciting in 2016 phone with 2900mAh battery.
4000mAh or keep it in the lab.
As long as it has a smaller battery but is more efficient than others... why shouldn't it be all right?