10.1 has had 7 release candidate releases so far. Been running them for a while and they don't seem anymore crashy than 10.0 and the GPU acceleration is nice.
Also it would be a great time to upgrade Firefox to the 3.6.4 release candidate for those using Firefox. Plugin process separation... yummo.
Honestly it seems much more like a statement of the facts so you can make a choice. I'd rather also know the RC is unaffected than ONLY know that the current version is vulnerable. Obviously an RC release is not a long term fix, but this is a breaking bug.
I wont comment on the whole "use our RC release" as a mitigation path in production env's....