Apple supplier Imagination Technologies announces new PowerVR mobile GPU architecture that they say will boast 35 percent GFLOPS density improvement, 80 percent fillrate density improvement for user interface and casual gaming, and 70 to 90 percent gaming density improvement. It could hit the market by the end of 2018.
http://www.notebookcheck.net/New-mobile-GPU-architecture-could-power-the-2018-iPhone.202102.0.html