The Sigma DP1 has a new firmware update, which is version 2.0. For more details check the two aforementioned links or the official Sigma DP1 website. And speaking of the DP1, be sure to check the list of reviews so far, we counted over 20 by websites big and small. The going price for the DP1 is $700 or so.
RAWsumer reviews at the Compact Reviews Organizer
CANON: G11 S95 G10 G9 S90 SX1is
PANASONIC: LX5 LX3 LX2 FZ50 FZ100 FZ40/FZ45 FZ38/FZ35 FZ28
RICOH: GRD III GRD II GX200
SIGMA: DP2 DP1
NIKON: P7000 P6000
CAMERA DIARIES: Panasonic LX3 Canon G10