It is unknown if these games will be released on the same day for a worldwide release, nor is the exact date that they will be released known at this time. They will be available for the Nintendo 3DS and Nintendo 2DS systems.
“May 7, 2014— The Pokémon Company International and Nintendo announced today that Pokémon Omega Ruby and Pokémon Alpha Sapphire will launch worldwide in November 2014, exclusively for Nintendo 3DS and Nintendo 2DS. Pokémon fans will collect, battle, and trade Pokémon in a new adventure.
Pokémon Omega Ruby and Pokémon Alpha Sapphire are a fresh take on Pokémon Ruby and Pokémon Sapphire, which launched in 2003 and were fan-favourite hits on the Game Boy Advance system. The new titles promise to take players through a dramatic story within a spectacular new world.