Wow, all of a sudden an influx of new games really makes me want to get a new system! I'm leaning towards the PS4. Although I want to wait for the next PS4 iteration. Anyway, the games I'm excited about include:

Brothers

Divinity: Original Sin Enhanced Edition (my #1 pick)

Grand Ages: Medieval

Mighty No. 9 (although I realize this has been contentious)

Shovel Knight

Teslagrad

The Book of Unwritten Tales 2

The Talos Principle: Deluxe Edition

Wasteland 2: Director's Cut (super excited about this one)

Definitely, enough new material to warrant a "next-gen" (or is that current-gen?) purchase! Also, I will add that while some of these games have been available as downloads, I only purchase discs, and all of these are coming out on discs!

Not trying to be a dick... but this is now Spring 2016, right?

Aren't most of those already available on other platforms?

As far as I know Mighty No 9 is supposed to released on March 2016.

As for other platforms, currently I believe that anything out is available as download only. That's certainly the case for Divinity and Wasteland.