Also PS3, PS4 and Xbox One.
Each version will cost you $20, but the PS3/Vita version is cross-buy, so you get two copies for the price of one. If you then upgrade from the PS3 to the PS4 version, it'll be a mere five dollars.
More details over at mojang.com. I, for one, have been waiting patiently for Minecraft to appear on Vita. Never touched it on PC or 360 - even as it swept the gamer consciousness and I began to see kids on the street in creeper hoodies - but if I'm gonna' try it, it's going to be on my favorite platform.