Replace New and Noteworthy with links to release notes.

Closes #2199
See spring-projects/spring-data-relational#1351

Author: schauder

src/main/asciidoc/index.adoc

@@ -11,7 +11,7 @@ ifdef::backend-epub3[:front-cover-image: image:epub-cover.png[Front Cover,1050,1
 NOTE: Copies of this document may be made for your own use and for distribution to others, provided that you do not charge any fee for such copies and further provided that each copy contains this Copyright Notice, whether distributed in print or electronically.
 
 include::preface.adoc[]
-
+include::{spring-data-commons-docs}/upgrade.adoc[leveloffset=+1]
 include::{spring-data-commons-docs}/dependencies.adoc[leveloffset=+1]
 
 [[reference]]