Full litter registration became available recently but has been rarely utilized, like under 2% of all litter registrations. It started out as temporary test program a couple of years ago, and I encouraged David Roberts of AKC's registration department to not end it when its initial time ran out. The AKC board agreed with his recommendation to extend it.
Then, in June the AKC board agreed to offer this AKC Registration Pledge Challenge program, where parent clubs are to urge their members to, in turn, urge their puppy buyers to register their puppies. This is not what I proposed. I proposed that the parent clubs urge their breeder-members to register the puppies with the litters under the full registration program. AKC thought that was trying to go too far too quickly, so the pledge challenge program is a watered down compromise, like a first step towards combining litter and puppy registration as the usual way of doing business.
Full litter registration is a no-brainer for CKCSC,USA members, since all puppies are registered with their litters in the CKCSC,USA. But most AKC-only breeders, of all breeds, have viewed blue slips as the puppy buyers' responsibility. This has been so for decades. So, I suggested that the breeders be given a discount for registering the puppies and the litters at the same time.
Maybe, sometime, AKC will convince its parent clubs, and the parent clubs in turn will convince their members, to use full litter registration all the time. At least that option is still available, rather than AKC ending the full litter registration program after the end of its test period.