PopCap Games have released Plants VS Zombies 2: It’s About Time on the iTunes app store in North America. You can buy the title from the US iTunes store directly here.
PVZ 2 is a tower-defence action-strategy adventure game where players must stop an army of zombies from eating all of their brains. If you’re a UK citizen, then you can purchase the game from the UK iTunes store here.
Any additional plants will push you back between $2.99-$3.99, or alternatively, you can unlock many different variety of plants by just simply playing as normal.