Update modules/ROOT/pages/8.4.0-release-notes.adoc

Co-authored-by: Millie <millie.macdonald@tiny.cloud>

Author: kemister85

modules/ROOT/pages/8.4.0-release-notes.adoc

@@ -35,7 +35,7 @@ The following new Premium plugin was released alongside {productname} {release-v
 
 === TinyMCE AI
 
-**TinyMCE AI** is the new premium AI platform for {productname}: faster drafting, stronger editing workflows, and AI that stays inside a familiar rich-text surface — without wiring a separate AI product to the stack.
+**TinyMCE AI** is the new premium AI platform for {productname}: faster drafting and stronger editing workflows with a ready-to-use AI features - now available as both a plug-and-play plugin and an API for custom integrations.
 
 The platform centers on three experiences that mirror what teams expect from modern AI writing tools: