It got offered to me as an update without searching for it but did have to go into appstore/updates to pick it up. Im sure i would have got the update badge on appstore in due course.

Meridian owner since 1992
Prime & PSU, Focal Elear headphones, Roon (ROCK 8Gi5 NUC), Explorer 1 & 2, F80. 200/203, various Sonos (via Roon).