Universal Profile 3 has since been released by the GSMA, which includes end to end encryption based on MLS. Apple is expected to use the new version of the standard with the upcoming iOS 19. Google announced their adoption as well.
By the way, routing through Google infrastructure is not a given. This is up to the carrier (albeit sadly many do use Google infrastructure).
Universal Profile 3 has since been released by the GSMA, which includes end to end encryption based on MLS. Apple is expected to use the new version of the standard with the upcoming iOS 19. Google announced their adoption as well.
By the way, routing through Google infrastructure is not a given. This is up to the carrier (albeit sadly many do use Google infrastructure).