According to this vendor who has a standing account with Expansion when they do become available has announced that primers will not be available until at least SPRING OF 2023.
Expansion Ballistics Small Pistol Primers #7 Brass EXPECTED SPRING 2023 - https://southerndefense.com/copy-of-expansion-ballistics-small-pistol-primers-7-brass/
Expansion Ballistics Small Pistol Primers #7 Brass EXPECTED SPRING 2023 - https://southerndefense.com/copy-of-expansion-ballistics-small-pistol-primers-7-brass/