It has been revealed that on the 6th of November Pokémon Puzzle Challenge will be released for $4.99. The game was originally released for the GameBoy Colour at the end of 2000 in the US, with a June 2001 release in Europe. No news on a European release date has been revealed yet.
On the 13th of November Pokémon Trading Card Game GB will be released for $5.99. The game was originally released in the US for the GameBoy Colour during April 2000, with a December release in Europe. The game was released on the European 3DS eShop in July.
If you buy the games before the release of Pokémon Omega Ruby and Pokémon Alpha Sapphire then you will be given a demo code for the games.