Pokémon Gaming CentralFor topics that aren't necessarily restricted to one game, Pokémon Gaming Central ranges from comparing and contrasting the differences in the gaming generations to discussing the gaming franchise as a whole.
Gameboy Advance: Pokemon Ruby & Sapphire
Pokemon FireRed & LeafGreen (remakes of Pokemon Red and Blue/Green)
Nintendo DS: Pokemon Diamond & Pearl
Pokemon HeartGold & SoulSilver (remakes of Gold and Silver)
Pokemon Black & White
Pokemon Black 2 & White 2
Starting to see a pattern? Basically, they won't release Hoenn remakes for the DS because the differences in terms of graphics won't be different enough from the original Hoenn games (Ruby & Sapphire), much like why they didn't make a Gold & Silver remake for the Gameboy Advance for the same reason, and it was too soon to release a remake just 4 years after Gold & Silver came out. And with the new handheld console, the Nintendo 3DS, it makes sense that Nintendo won't release a brand new remake on an old outdated console from 2005 (the Nintendo DS). My guess is that we will get a Hoenn remake for Nintendo 3DS after Pokemon X and Y have been released, so it will be sometime in 2014 or at the beginning of 2015 I guess.