Hi Jonathan -
Happy new year to you as well. We would love your help!
The biggest thing that's holding up a 1.0 release is the parser. It needs to be updated to handle all the new CSS3 syntax as well as finish the validation (these all happen in the parser). It's hard to call CSS Lint 1.0 until the parser supports everything.
Anders' suggestion is a good one as well, though I wouldn't hold up a 1.0 for it if it weren't included. I also wouldn't mind if somebody wants to implement that. :-)
-N