There hasn't been confirmation for either case, as far as I know. However, the fact that the video mentions "iOS" makes me inclined to believe this will be on iPhone and iPad.
Updated news for the game. The developer stated this is a timed release for ps4 and may come to other places. He said he liked the specs of the ps4 more.
iOS gaming takes another large leap forward. Excited to see how this turns out. Wasn't really a fan of Braid but this looks like something I can enjoy.