Yes, the currently available Tappy Chicken was built against 4.6 and has both a 32 bit and 64 bit version (as well as a Metal and a ES2 version). I have not yet uploaded the 4.7 version of Tappy Chicken to iTunes Connect as of yet, but I will update when I have.
We did discover a bug when updating the code signing for UDK and the fix for that was migrated over to 4.7. However, we didn’t ever see the same bug in UE4, so it was pulled over as a precautionary measure.