For a two-hour block tonight, you won't be able to play Pokémon X & Y.
Nintendo will start its network maintenance at 7 p.m. Eastern time tonight and continue working until 9 p.m. The online portions of the collect-em-all pocket-monster game, including rankings and versus battles, will be unavailable during that period.
The company needs to resolve current issues with the Nintendo Network before it can launch Pokémon Bank, a cloud storage service, and its Poké Transporter application,
Via: Polygon