Check this out: http://forums.dpreview.com/forums/re...ssage=27021078
Sigma is apparently planning to release two more compacts, in addition to the DP1, later this year. This information reportedly comes via an Amateur Photographer (AP) interview of Sigma's founder Michiro Yamaki. The relevant quote from the AP article states "Expect to see two more compact cameras by the end of the year was the surprise news from Sigma's founder Michiro Yamaki during an exclusive meeting with AP." AP went on to speculate that these cameras may be similar to the DP1 but with different focal lengths and/or optical zoom capability.
I would love to see a Sigma DP series camera with a longer lens than the DP1. 40mm (equivalent) would be perfect. Given this preference, the AP interview caused me to consider cancelling my DP1 pre-order. However, I've decided against that since 1) I don't want to wait another 6 months or longer, and 2) I imagine carrying around two Sigma DPs of different focal lengths will work very well for me. That said, it makes no sense for Sigma to release this news now.