Updated Juno project plan for Acceleo.
diff --git a/acceleo/plan-juno.xml b/acceleo/plan-juno.xml
index 4e32e68..e21f481 100644
--- a/acceleo/plan-juno.xml
+++ b/acceleo/plan-juno.xml
@@ -69,7 +69,14 @@
</target_environments>
<compatibility_with_previous_releases>
<html:div>
- The acceleo 4.0 version will be compatible with the 3.2, 3.1 and 3.0 versions.
+ <p><strong>API compatibility. </strong> Acceleo 4 will be compatible with the extension points defined
+ in Acceleo 3.0, 3.1 and 3.2 but some Java APIs may be deprecated and replaced with new APIs.</p>
+ <p><strong>Workspace compatibility. </strong>A workspace being used with Acceleo 3.0, 3.1 or 3.2
+ will still open and work with Acceleo 4. In general, though, once a workspace is opened with Acceleo 4
+ there is no guarantee it will continue to work with older versions (that is, there may be some one-time
+ migration of some workspace meta data that prevents it being usable in older versions.</p>
+ <p><strong>Project compatibility. </strong>A project being used with Acceleo 3.0, 3.1 or 3.2
+ will stay compatible with Acceleo 4.</p>
</html:div>
</compatibility_with_previous_releases>
<themes_and_priorities>
