I have Camera Raw 8.7.1 installed. Sometimes it will show me icons for the Graduated Filter and the Radial Filter and I can use both. At other times it will not show the Radial Filter and of course when that happens I can't use it. Why?
If you have CS6, CC and CC 2014 installed you will not get the new Features of ACR in CS6 you will have them in CC and CC 2014.
I have CS 6 installed as well as a subscription to Photoshop CC, but I don't use CS 6. I'm just keeping it around in case Adobe jumps the CC subscription price out of sight. I was using Photoshop CC and Bridge. I always pass my .nef and .jpg files through ACR first. Sometimes the Radial Filter button is there and sometimes it is not.