A new update for the Pokémon Bank has just been released, allowing it to be used with Pokémon Omega Ruby and Alpha Sapphire. The Bank, which lets players deposit, store, and manage their Pokémon on the Internet, is now at version 1.2.
No mention has been made of whether items can be transferred to the new version of the application. It is now available on the Nintendo eShop, and is 210 memory blocks in size.
Source: Hardcore Gamer