It sounds like there is a PS4k coming out in 2017:
Dubbed the 'PS4.5,' or the 'PS4K,' the alleged console was first reported last month. The reports suggested new hardware, including a more powerful GPU, a 4K Blu-ray player, as well as an incremental price hike to reflect the component upgrades. Now, additional rumors have shed more light on the recent speculations.
The PS4K reportedly features both a CPU and GPU upgrade, the latter being twice as powerful and much faster than the one found in the current PS4.
http://www.idigitaltimes.com/playsta...se-date-524024