Merge branch '3.2.x' into 3.3.x

Closes gh-43159

Author: mhalbritter

spring-boot-project/spring-boot-docs/src/docs/antora/modules/ROOT/pages/documentation.adoc

@@ -25,7 +25,8 @@ You should always ensure that you are running a {url-github-wiki}/Supported-Vers
 
 Depending on the version that you are upgrading to, you can find some additional tips here:
 
-* *From 1.x:* xref:upgrading.adoc#upgrading.from-1x[Upgrading from 1.x]
+* *From 1.x to 2.x:* xref:upgrading.adoc#upgrading.from-1x[Upgrading from 1.x]
+* *From 2.x:* xref:upgrading.adoc#upgrading.from-2x[Upgrading from 2.x]
 * *To a new feature release:* xref:upgrading.adoc#upgrading.to-feature[Upgrading to New Feature Release]
 * *Spring Boot CLI:* xref:upgrading.adoc#upgrading.cli[Upgrading the Spring Boot CLI]
 

spring-boot-project/spring-boot-docs/src/docs/antora/modules/ROOT/pages/upgrading.adoc

@@ -12,7 +12,15 @@ If you are more than one release behind, please make sure that you also review t
 [[upgrading.from-1x]]
 == Upgrading From 1.x
 
-If you are upgrading from the `1.x` release of Spring Boot, check the {url-github-wiki}/Spring-Boot-2.0-Migration-Guide[migration guide] on the project wiki that provides detailed upgrade instructions.
+If you are upgrading from the `1.x` release of Spring Boot, check the {url-github-wiki}/Spring-Boot-2.0-Migration-Guide[migration guide] on the project wiki that provides detailed upgrade instructions to upgrade to Spring Boot 2.x.
+Check also the {url-github-wiki}[release notes] for a list of "`new and noteworthy`" features for each release.
+
+
+
+[[upgrading.from-2x]]
+== Upgrading From 2.x
+
+If you are upgrading from the `2.x` release of Spring Boot, check the {url-github-wiki}/Spring-Boot-3.0-Migration-Guide[migration guide] on the project wiki that provides detailed upgrade instructions.
 Check also the {url-github-wiki}[release notes] for a list of "`new and noteworthy`" features for each release.