New Arduino toy from Shenzhen

I’m gearing-up to go over to Shenzhen for Hacker Camp in June.
One interesting thing released by some of the people over there just today is the “Arduboy” dev board:

Basically it’s an Arduino-compatible board with power-switch, battery, buzzer, D-Pad, A/B buttons and a dinky little OLED screen all in the rough form of a Nintendo GameBoy (But much thinner).