Starfield rating confirms "in-game purchases," which doesn't necessarily mean microtransactions

Starfield cities

Starfield's now-official ESRB rating confirms it has "in-game purchases," but this doesn't necessarily guarantee microtransactions. 

The tag of "in-game purchases" has been used by the ESRB to describe DLC expansions for games in the past, so it could be that Starfield is actually set to receive post-launch content instead of having a more conventional in-game store.