Add doc notes about EclipseLink removal (#2605)

Author: dimas-b

CHANGELOG.md

@@ -43,6 +43,9 @@ request adding CHANGELOG notes for breaking (!) changes and possibly other secti
 
 ### Upgrade Notes
 
+- The EclipseLink Persistence implementation has been deprecated since 1.0.0 and will be completely removed
+  in 1.3.0 or in 2.0.0 (whichever happens earlier).
+
 ### Breaking Changes
 
 - Helm chart: the default value of the `authentication.tokenBroker.secret.symmetricKey.secretKey` property has changed

README.md

@@ -57,7 +57,7 @@ Apache Polaris is organized into the following modules:
   - `polaris-server` - The Polaris server
   - `polaris-admin` - The Polaris admin & maintenance tool
 - Persistence modules:
-  - `polaris-eclipselink` - The Eclipselink implementation of the MetaStoreManager interface
+  - `polaris-eclipselink` - The Eclipselink implementation of the MetaStoreManager interface (deprecated for removal)
   - `polaris-relational-jdbc` - The JDBC implementation of BasePersistence to be used via AtomicMetaStoreManager
 
 ## Building and Running

site/content/in-dev/unreleased/metastores.md

@@ -46,7 +46,10 @@ Additionally the retries can be configured via `polaris.persistence.relational.j
 
 ## EclipseLink (Deprecated)
 > [!IMPORTANT]
-> Eclipse link is deprecated, its recommend to use Relational JDBC as persistence instead.
+> EclipseLink is deprecated, it is recommended to use Relational JDBC as persistence instead.
+
+> [!IMPORTANT]
+> EclipseLink persistence will be completely removed from Polaris in 1.3.0 or in 2.0.0 (whichever happens earlier).
 
 Polaris includes EclipseLink plugin by default with PostgresSQL driver.