Sigma announces new PG-31 power-grip for Sigma SD1

Sigma has announced a brand new accessory for the Sigma SD1, the PG-31 power-grip, coming out in January 2012. Prices have not been revealed, but for anyone who has already paid for a Sigma SD1, the PG-31 price will probably be a rounding error ;-) Press release parade at Photography Blog, Pop Photo, ephotozine et al.