We haven’t announced a GA date yet. If you have specific clients/use cases which require Fabric we’d be glad to know as it may affect prioritization.
DM me on Slack if you want early access to the alpha version, I’m sure we can arrange that for you.
From a user perspective, it won’t feel much different than using Canton with the Postgres integration (the Canton domain will be centralized, but you can still distribute the participant nodes) so you may want to start with Postgres and it will be dead simple to swap in Fabric and transfer all contracts after the fact, even if you’re already in production.