No one knows anything about the successor to the GameBoy except that it\'s being worked on.
We don\'t know how many screens it will have, how many buttons, how powerful, what games, time frame, compatibility, connectivity, plans, business model, pricepoint, software, physical design, or anything.
We just know that Nintendo is always doing work in some respect on its next generation. That goes for home consoles and handhelds.
DS is the wifi player right now as will be GameCube most likely. So it\'ll be easiest to link them, but that\'s just speculation at this point.
And that\'s it.
As for the difference in GBA and DS, clips, the DS games are more quirky. If you want something different (not neccesarily better) you buy the DS and try it out.
It has nothing to do with being a kid or an adult unless you\'re that affected by marketing campaigns that you think everything by Nintendo is for toddlers. Then it\'d just be for kids.
eh...
-Dan