I think it's more likely that the PS4 slim will be more likely in 2017.
The PS4 has big momentum right now and a killer game line-up both exclusive and multi-platform next year so they don't need the sales bump a PS4 slim would give.
I think it's more likely we will see a price cut for the PS4 in 2016 with the new PS4 slim coming out later.
Still there is a small chance in my mind it may happen Christmas 2016.
This is the Game of Thrones
Where you either win
or you DIE







