I updated to Camera Raw 6.4.1 flawlessly with Photoshop's updater, though I am intrigued as to why the quick turnaround in producing a x.x.1 release. I see that 6.4.1 uses the same ReadMe as 6.4.
On looking for a corresponding DNG 6.4.1, I could not find one.
Earlier today I followed a link claiming to have a combined installer, but which delivered only Camera_Raw_6_4_1_updater.zip. Clearly I wouldn't want to run a combined installer, anyway, as I already have the Camera Raw part. Now all I see is this:
Is the fact that there's no DNG 6.4.1: