Scuba....I stand corrected. The booster was APPROVED for all those 18+ years old BUT the DISTRIBUTION looks to be similar to the previous doses. Excerpt from a NYT article

Quote
The first boosters would probably go to nursing home residents, health care workers and emergency workers, who were the first to be vaccinated last winter. They would likely be followed by other older people, then by the general population. Officials envision giving people the same vaccine they originally received.


NYT article link