Well, seems like GameSpot has cleared up the issue a bit.
Four Sword has been renamed Hyrule Adventures, Tetra's Trackers has been renamed Navi Trackers and there is only one additional mode.
Each of the games will also feature a single player mode such as Hyrule Adevntures having a story mode, and Navi Trackers pitting you against Tingle.
The whole collection will be called Four Swords Plus
http://www.gamespot.com/gamecube/act...s_6085196.html