Camera RAW 3.5 doesnt support it. Camera RAW 3.6 will be out “soon”. My results with the Canon DPP processor have been pretty dismal. Lightroom Beta 4 is out, which does support it, but I haven’t really played with it yet, as it got a bit choked up (but hasn’t crashed yet) when I threw my 30,000+ photos into its library.
Some comments from Thomas Knoll (the man):