Samsung just announced a Rose Pink Galaxy S8+ but it will only be available in Taiwan (for now).. Except for its colour, the Rose Pink is identical specs to the other colours. (4GB RAM in Taiwan). At the same time, they have renamed the current colours -Coral Blue has become Ice Lake Blue, Orchid Grey is now Smoked Purple Grey, and Maple Gold is Quicksand Gold.
It's unknown at this time if Samsung plans to release the Rose Pink color in other regions but typically they do get launched in due time. We also expect they Rose Pink to release in S8 as well.