Microsoft is jumping on that whole thin-is-in bandwagon with the Bluetooth Mobile Keyboard 6000. As the name implies, this is a Bluetooth-only device, powered by AAA batteries. The keyboard slopes downward, making the front event thinner. There’s also a curved keyboard layout, which Microsoft refers to as Comfort Curve. The keyboard is $89.95, and the numeric keypad is an extra $44.95. You’ll see these on store shelves in October.