It’s not that surprising because the game celebrates its 5th anniversary.
The announcement tells pretty much everything there is to say:
Continuing the 5th anniversary fun: our friends at @BlitWorks are working hard to bring us a new way to play FEZ! https://t.co/FJDHPt7djH
— Polytron (@Polytron) April 13, 2017
Unfortunately, there’s no specific date for the release and we should expect the launch sometime during this year. Meanwhile, FEZ is available on PS3, PS4, PS Vita, X360, Windows and Linux.