Oh my God, I'm going to have to agree with Mario. I had a freakin' blast playing "Zelda:Four Swords" at E3. As many of you know, I now have 4 GBA's, and this game is one of the reasons why. This will be an absolutely incredible party game...
(Before anyone calls me nuts for having for GBA's, let me say this. First I have a ton of game playing friends, inlcuding my girlfriend, and second, I got the GBA's for $20 a peice. Not bad. Plus I got link cables on clearance at "K-mart" for $3 a peice.)
Anyway, I hope this disk somehow inlcudes, Four Swords, Tetra's Trackers AND Majora's Mask, but that's probably too much to ask for. It will probably be just the first two, like everyone else said. It would be really sweet if it was all of the "old school" games however...