nnooooo they're apparently getting rid of the GBA slot!!!!
http://www.pocket-lint.co.uk/news/news.phtml/13947/14971/nintendo-ds-extreme-rumours-surface.phtml
Nintendo said they have one in the works, but they ain't releasing it until the DS Lite stops selling so well which meens it won't be anytime soon.
Via KotakuWe are always developing new products. However, since nothing has been announced officially, we are unable to comment at this time.
Well it wouldn't be a rumor if the official site mentioned it. But then you have to consider that the DS lite was leaked early, with pics, and it turned out to be the truth so who knows.There is nothing that I can find on the Official Web Sites that gives any truth to this rumor.