I don't think this game will do yoshi justice. It's been developed by artoon for nintendo.
Just to give you some idea, they did blinx and blinx 2 for xbox.
It seems to me that nintendo have all but ceased in house production of gba games.
They're farming stuff out left right and centre.
Only warioware twisted in the last year or so has been internally developed.
Fuse games did mario pinball, flagship did zelda and kirby amazing mirror, hudson are doing mario party advance. In house nintendo stuff is getting pretty thin on the ground.
Hopefully some of the newly increased development budget funds will set things straight.