Third party RAW support for the Sigma DP1 remains absent. Thomas Knoll suggested in the Adobe forums that the lack of DP1 support in ACR/Lightroom is "due to issues beyond Adobe's control". Eric Chan of Adobe said the following: "Unfortunately, the matter is currently is out of our hands. We have to wait for some non-technical issues to be resolved before we can proceed with DP1 support. Please be patient."

The implication is that Sigma is responsible for the absence of third party support for Sigma DP1 files. The Sigma SD14 DSLR, which shares the DP1 sensor, is supported by Adobe and others. It stands to reason that Sigma could facilitate outside DP1 RAW file support, and it is certainly in the interest of DP1 owners for them to do so. I hope Sigma isn't intentionally preventing third party support!

If you use a DP1, please take a moment to vote in the following poll and leave a comment below. Hopefully we can get Sigma's attention.