This also says "Additionally, use of weak cipher suites or unapproved algorithms – e.g., RC4, MD5, and others – is not allowed."
XC uses MD5 for hashing just about everywhere...
Some say it is going to be "illegal" to use IE6-10
Same should apply to earlier versions of Chrome, Firefox, etc
So yes I guess we are going back to the really annoying messages showing on sites - please update your browser or use blah-blah-blah...
Maybe off topic but I don't hear PCI council saying anything about the Equifax case. This just makes PCI not creditable in my eyes at all... But they are the ones writing the rules for everyone to follow.