Super Mario 3 Gets All Portable
Thanks to an anonymous reader for pointing to a Gamers.com article showcasing new screenshots and details from Super Mario Advance 4 for GameBoy Advance. This title, which is a portable revival of the classic NES title Super Mario Brothers 3 with the higher quality visuals of the SNES Super Mario All-Stars version, will also have e-Reader connectivity, and a recent IGN Pocket preview claims "players can transfer the data from e-Reader to the game... to upload brand new levels and challenges", though, logically enough, "you'll need two GBAs (or a Game Boy Player [for Gamecube] and a GBA) to take advantage of this feature."
The reason you need two GBAs for a Gameboy Player is that you can't have an e-reader and a cartridge in the GBA at the same time. Thus one GBA has the super mario game cart in it ready to receive and save the new level and the other GBA reads the e-reader cards and sends the level.