Soundwave on 31 December 2016
Some PS4/XB1 ports should be possible, PS3/360 still were able to run certain games like MGSV and Far Cry 4 and the Switch is in docked mode at least a good deal more powerful than both with 6x more RAM (if we assume 3GB available to games).
That said, Nintendo fans also need to be realistic, the process of porting a lot of those types of games is not going to be easy, and will require some large compromises in the game. For $60 you're almost certainly getting a fairly compromised/downgraded port.
PS3/360 ports I think will be more plentiful.
Games that can't even hit 1080p on an XBox One though are going to be huge challenges to port I think.
