From Bulbapedia, the community-driven Pokémon encyclopedia.
GSDS. GS stands for Gold and Silver, and DS, obviously, stands for Nintendo DS.
Since they made remakes of the original Red and Green, many fans suspect that there will be remakes of the second games as well. There have been many hints in the games of a Gold and Silver Remake:
Evolutions and Prevolutions of 1st and 2nd Gen Pokémon:
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