I'm having the same problem as many users on these forums where Photoshop CC will not detect an update for camera raw.
When I go into about plugin it shows ACR as 8.3 still.
I tried uninstalling and reinstalling Photoshop and that took me from 14.1 to 14.2 on Photoshop but it still has 8.3 camera raw.
This is annoying because I have already updated by Lightroom and it complains when trying to edit an image in Photoshop because the ACR is different.
Is there any manual install for the ACR?
I'm using Windows 7 64 bit.
I selected the link for ACR 8.4.1 for Photoshop CC for Windows and downloaded the setup.zip file and then extracted to my local drive.
When I try to run the patch installer, it says this update is not applicable and just immediately stops.