Chris, we're currently working on some sRAW white balance fixes for Camera Raw and Lightroom. (These do not affect full raw images.)
There are basically 2 issues; one is related to the new firmware 1.0.7, the other is not.
ED - this is interesting. I never tried the camera with firmware 1.0.6 having literally bought it yesterday - but I was disappointed by colour performance in sRAW.
BTW - when you say "we" is this you as a company, you as part of Canon, you as part of the Lightroom Team? Interested to know as if there is a firmware issue that needs a fix from Canon, it will be good to get this information in the right place soon.
The joys of early adoption!
Best