Timeline on availability of db.r6i in Europe/Frankfurt

Im not a AWS employee and have almost the same question (with a different service, EKS).

R6 instances are already available in eu-central-1b and eu-central-1c, but not eu-central-1a. I just checked and you can actually already create a Single-DB-Instance or with a single read replica since it only needs 2 availability zones.

If you need 3 zones availability the question is:

When will r6 instances be available in eu-central-1a , so we can actually use R6 instances in services that need all three zones?