It's been announced that the collection, which includes Dead Island and Dead Island: Riptide, is coming to PC, PS4 and Xbox One for $19.99 each You won't have long to wait either: It's going to be out May 31st.
Take a look at the announcement trailer right here:
https://www.youtube.com/watch?v=vOdA5VJmgs0Video can't be loaded because JavaScript is disabled: Dead Island Definitive[...]