EDITED 13 JUL 2021- I have learned that these are not new production but are old stock making it to market. The AR15A4 is still replaced by the CR6700A4.
Colt has a new AR-15A4 on the market. I hope to have detailed photos soon.
The rifle has selector stops and it has a new laser engraved rollmark.
This new AR-15A4 in on the market in addition to the CR6700A4 20″ rifle with the ‘Carbine’ marked lower receiver.
The photo with the red background is courtesy of Clyde Armory. The other photos are courtesy of an ar15.com member.