Perhaps, I find the release to be strange at first since the main graphics are not remade whatsoever and the effects are still blurry like they belong to the original Dreamcast-era. The only enhancement would be high-definition vector graphics and UIs for the previous release on XBLA as Rez HD. The Playstation 4 and PC releases add their own exclusive stuffs like Area X for instance which is actually new and makes full potential on what next generation can do as made with Unreal Engine 4.
In Area X, you get to see better effects and tons of particles all over like Child of Eden as well as the fact that the game supports VR optionally for both the main game and Area X.
There are also gaming events where VR is being tested through various projections with Rez Infinite being played by people that way. Those events might be technically experimental at the time although I don't know if you would still need the VR headset or not.
The famous man behind Rez, had already left Q Entertainment to form his own game company which is Enhance or something and he eventually worked on the Playstation 4 and Steam versions of Rez under Rez Infinite. The were other companies involved with him as well and especially that his other games like Lumines and Meteos no longer belonged to Q Entertainment anymore. There might be a modern mobile game of Lumines that famously collaborated with Ultra Music or something since the DJ festival event took place like last year or some kind in Japan. There's also some addon accessory for Rez Infinite for you to experience the music yourself and needless to say, VR is not required for it.
