prepare 4.0 initial release notes skeleton
diff --git a/site/src/site/releasenotes/groovy-4.0.adoc b/site/src/site/releasenotes/groovy-4.0.adoc
index 7636149..6dcda32 100644
--- a/site/src/site/releasenotes/groovy-4.0.adoc
+++ b/site/src/site/releasenotes/groovy-4.0.adoc
@@ -37,11 +37,24 @@
[[Groovy4.0other]]
== Other improvements
+=== JavaShell (incubating)
+
+A Java equivalent of GroovyShell, allowing to more easily work with snippets of Java code.
+
=== JSR308 improvements (work in progress)
Groovy has been improving JSR-308 support over recent versions.
In Groovy 4.0, additional support has been added.
+=== Java-inspired changes (under investigation)
+
+The following changes are being explored:
+
+* Switch expressions
+* Support for text blocks
+* Module definitions written in Groovy
+* Support for records
+
== JDK requirements
Groovy 4.0 requires JDK9+ to build and JDK8 is the minimum version of the JRE that we support.
