Pretty sure Memory Alpha's wrong. They claim the entire season will drop the same day, which none of the current Star Treks do that, and I'm not sure any show on Paramount+ drops whole seasons on the same day. Indeed, a quick Google search confirms an official premiere date for season 3 has not been announced. My guess is with SNW's finale airing next week, we'll get an announcement concerning the next series to premiere afterwards. Maybe even on the SNW finale's Ready Room episode?