The release date is September 28 and the price, surprisingly, is only $50, and that includes the bongo drum controller.
Think of Donkey Konga as a version of DDR that you play with your hands on drums instead of with your feet on a dance pad. It's rhythm based, meaning you have to match your beating on the drums with the arrows on the screen. Along with classic Nintendo themes like the Legend of Zelda and Super Mario Bros, Donkey Konga also includes songs from current pop culture artists, such as Blink 182.
Donkey Kong Jungle Beat is a platformer that you play by using the bongo drums from Donkey Konga. Tapping the right drum makes DK run...the faster you hit the drum, the faster DK runs. Clapping makes DK jump.
DK Jungle Beat sounds a lot stranger than it plays. I saw this game at E3 and let me tell you...it's really really cool. It's probably one of the more innovative games shown at E3. It's one of those easy to learn, hard to master kind of things.