"Catch an all-new Pokémon Direct right here on Wednesday, 9/4 at 4 a.m. PT.
We will share new details on Pokémon X and Pokémon Y!"
Europe: 12 noon (UK Time)
thanks to Astrogamer for stream links!
US Stream http://www.nintendo.com/nintendo-direct/archive/09-04-2013/
UK http://www.nintendo.co.uk/Misc-/Nintendo-Direct/Latest-Nintendo-Direct/Nintendo-Direct-698557.html
Japan http://www.nintendo.co.jp/nintendo_direct/20130904/index.html