I thought all GFCI's since 2003 were equipped with continuous internal monotoring, self-test circuitry that locks out and won't pass voltage if a malfunction is detected, which would seem to make the monthly test a moot point anyway.
I believe this is why a standard 15A GFCI receptacle cost $12.00 instead of $6.00 like they did back in 2002. The TR and WR are even more expensive now.
Seems this new compliance concern from the CMP is about seven years to late to make any real difference as far as safety goes. Now it will most likely just be an added inconvenience for installers to comply with.