Korg nanoSeries music controllers
Korg is introducing the nanoSeries line (Japanese link, Google translation) of digital music controllers. There will be three USB-powered models: a 25-key velocity sensitive mini keyboard (nanoKEY), a 12-pad mini drumpad (nanoPAD), and a 9-fader mini mixer (nanoKONTROL). As you can see they're clearly intended for use with a laptop running the Korg Legacy Collection synthesizer software or similar, and nicely integrate with the white MacBook.
The Korg nanoSeries is expected in October for around $100 - $120 each.