Beta label and postgres server

Author: benitav

self-hosting/installation/powersync-service-setup.mdx

@@ -54,9 +54,9 @@ If you are rolling your own Docker environment, you can include this init script
       - 'sleep 10 && mongosh --host mongo:27017 --eval ''try{rs.status().ok && quit(0)} catch {} rs.initiate({_id: "rs0", version: 1, members: [{ _id: 0, host : "mongo:27017" }]})'''
 ```
 
-### Postgres Storage
+### Postgres Storage (Beta)
 
-Postgres can also be used as a storage backend.
+Available since version 1.3.8 of [`journeyapps/powersync-service`](https://hub.docker.com/r/journeyapps/powersync-service), you can use Postgres as an alternative storage backend for sync buckets. This feature is currently in [beta](/resources/feature-status).
 
 #### Database Setup
 
@@ -174,7 +174,7 @@ client_auth:
 ```
 
 <Info>
-**Important:** When using Postgres storage, you must use a separate database instance from your source database used for replication. Using the same database for both purposes may cause unexpected behavior.
+**Important:** When using Postgres for sync bucket storage, a separate server is currently required for replication connections (if using Postgres for replication) and storage. Using the same server might cause unexpected results.
 </Info>
 
 Specify the connection to Postgres in the `replication` section. Retrieving your database connection string / individual parameters differs by database hosting provider. See [Database Connection](/self-hosting/appendix/database-connection) for further details.