Hi @ ZORRO1 - Sorrry we don't have details of this yet but you can certainly register here and we'll let you know.
Copying my post from another thread
I have checked with Sony support team in Australia via this chat: https://support.sonymobile.com/global-en/contactUs/?language=en_US
And here is their response:
Such a disappointment.. I can't understand why optus team couldn't do the same and ask official representatives so we could stop waiting