If it hasn't been noted yet, it should be noted that the estimates don't incorporate any data from the Census done this year. It merely utilizes the same tools it has all decade.
Having said that, the slow down in natural population growth can easily be viewed by the CDC/NCHS monthly provisional numbers for births-deaths(which I'm sure is used by the Census for estimates)
https://www.cdc.gov/nchs/nvss/vsrr/provisional-tables.htmOf course the first wave of COVID becomes quite noticeable in the APR-JUN months especially in the Ground Zero states.
Quite a few states will go natural growth negative this year, I guess the most surprising being Florida (which probably would have done it without the COVID or else they're way understating their COVID deaths). They really are quite dependent on importing old people.
Looks like Louisiana and Mississippi are poised for multi-year declines in population with Alabama a couple of steps behind.