This link is making the rounds on airline pilot union boards. The new range is, apparently, fact. The cause for the new range is speculation.
https://stevekirsch.substack.com/p/the-faa-has-very-quietly-tacitly
This might be good if your EKGs have raised the FAA's "interest".
A local AME has opined that the FAA is too slow and too disorganized for this to be a reaction to anything and this was something probably in the works for years...after that he added, "But I'm not going to get any more boosters".