X and Y.
Since this is going to be a full 3D (instead of 2.5D)... X and Y (as well Z) are the coordinates in 3D. X is horizontal, Y is vertical and Z is depth. Kinda neat reference. Marked +-+-+ (talk) 14:47, 8 January 2013 (UTC)
A few errors
There should be a dot after the Eiffel Tower part. Also, surely the last sentence is supposed to say five previous generations, not four. Արիանո 16:33, 8 January 2013 (UTC) Or rather I would say "the regions preceding it". Արիանո 16:39, 8 January 2013 (UTC)
Just to point out - it's been made clear in the Pokémon Direct that X and Y are the first two main series games without "Version" in their titles. In other words, they are not "Pokémon X Version and Pokémon Y Version", but "Pokémon X and Pokémon Y". Could this page please be edited to reflect this departure? NP Chilla (talk) 17:36, 8 January 2013 (UTC)