The TV series "Zatima" premiered its first season on March 16, 2023, on BET+, with two new episodes dropping every Thursday thereafter. This marks the official release date when the show started airing in 2023.

To clarify:

• Season 1 of "Zatima" began on March 16, 2023.
• New episodes were released weekly on Thursdays on BET+ starting from that date.

If the question concerns more than just the premiere date and refers to other specific episodes or seasons in 2023, please specify.