via has introduced a new motherboard form factor, pico-itx, which is about 7 cm by 10 cm in size:
Via Pico-ITX VT6047: The World?s Smallest Motherboard
VIA Pico-ITX Mainboard Form Factor: 10cm x 7.2cm
Via Pico-ITX VT6047: The World?s Smallest Motherboard
VIA Pico-ITX Mainboard Form Factor: 10cm x 7.2cm