The sales success of the DS was probably the last nail in the GBA's coffin. There are still quite a few games on the IGN list
, but not many major games. There's the MegaMan collection, Zelda, Mario Party, Wario Ware Twisted, and Mario Tennis. As for RPGs, there's Fire Emblem 2 for sure, and IGN has Tales of Phantasia listed, but I'd guess any future RPGs will be on the DS.