More sad news, folks.
GameBoyDojo was able to talk to an Eidos representative recently, and the topic of Eidos on Nintendo's new systems came up. Here is what GBDojo reported...
Today Eidos made it clear that there would be zero news, games, or announcements concerning Eidos's development on the Game Boy Advance or GameCube at this year's E3.
It looks like Nintendo will have GCN all to itself for the E3 show.