Polling the T4i owners
I checked the canon website, my serial number is one of the affected ones, but there has been no change to the grips (color is still black). Also I have not experienced any issues with any sort of skin irritation at all. Bought mine from B&H about a month ago. No issues, but I did register it just in case. If I don't see any problems I won't be sending it back. Btw, it has been used outside, in the high heat about 5-6 times.