[release-1.8] chore: clarify backstage version support (#1455)

* chore: clarify backstage version support

Signed-off-by: Paul Schultz <[email protected]>

* Update titles/rel-notes-rhdh/title-rhdh-release-notes.adoc

Co-authored-by: Judith Magak <[email protected]>

---------

Signed-off-by: Paul Schultz <[email protected]>
Co-authored-by: Paul Schultz <[email protected]>
Co-authored-by: Nick Boldt <[email protected]>
Co-authored-by: Judith Magak <[email protected]>

Author: 4 people

titles/rel-notes-rhdh/title-rhdh-release-notes.adoc

@@ -7,7 +7,7 @@ include::artifacts/attributes.adoc[]
 :context: release-notes-rhdh
 :imagesdir: images
 
-{product} ({product-short}) {product-version} is now generally available. {product-short} is a fully supported, enterprise-grade productized version of upstream Backstage v{product-backstage-version}. You can access and download the {product} application from the {company-name} https://access.redhat.com/downloads[Customer Portal] or from the https://catalog.redhat.com/en/search?gs&q=rhdh&searchType=containers[Ecosystem Catalog].
+{product} ({product-short}) {product-version} is now generally available. {product-short} is a fully supported, enterprise-grade productized version of upstream Backstage, compatible with version {product-backstage-version}. Plugins might be compatible with a newer Backstage version. You can access and download the {product} application from the {company-name} https://access.redhat.com/downloads[Customer Portal] or from the https://catalog.redhat.com/en/search?gs&q=rhdh&searchType=containers[Ecosystem Catalog].
 
 include::modules/release-notes/ref-release-notes-new-features.adoc[leveloffset=+1]