I haven't played the PS1 version, so i'm excited to finally see the cutscenes.
They're planning to redub X, Zero, and Sigmas voice in X4, so no more girly-sounding X. They might add voices to all the others in the collection as well, albiet probably just for those characters. They're also going to fix the grammatical errors in X6, as well as finally getting an English dub (X6 only had Japanese VO's).
They're also going to have remixed tracks for the first two games, with X3 getting the PS1 music.
All in all, it's going to be great.
