improve version support documentation

docs/book/src/reference/versions.md

@@ -15,7 +15,25 @@ All Infrastructure Providers are maintained by independent teams. Other Bootstra
 
 ## Supported Kubernetes Versions
 
-The project aims to keep the current minor release compatible with the actively supported Kubernetes minor releases, i.e., the current release (N), N-1, and N-2. To find out the exact range of Kubernetes versions supported by each component, please see the [tables](#release-components) below.
+The project aims to keep the current minor release compatible with the actively supported Kubernetes minor releases, i.e., 
+the current release (N), N-1, and N-2. Whenever possible we will go over and behind this trying to help our users:
+
+- For a given Cluster API minor release, we give best-effort support for future Kubernetes versions that are released during the time 
+  that we are actively supporting the CAPI minor release; depending on the changes that the new Kubernetes release brings in,
+  this could require users to update to the next patch release, or in other cases, determine the end of the support matrix
+  for a given Cluster API minor release.
+- We are keeping best-effort support for older Kubernetes versions as much as possible. 
+  Important! this is not a replacement/alternative for upstream Kubernetes support policies! 
+  Support for older version of Kubernetes is limited to "Cluster API can start a Cluster with this Kubernetes version"
+  and "Cluster API  can upgrade to the next Kubernetes version"; it does not include any extended support to Kubernetes itself.
+
+Whenever a new Cluster API release will be cut, we will document the Kubernetes version compatibility matrix the release
+has been tested with; summaries of Kubernetes versions supported by each component are additionally maintained in
+the [tables](#release-components) below.
+
+On a final comment, let's prise all the contributors keeping care of such a wide support matrix. 
+If someone is looking for opportunities to help with the project, this is definitely an area where additional hands
+and eyes will be more than welcome and greatly beneficial to the entire community.
 
 See the [following section](#kubernetes-version-support-as-a-function-of-cluster-topology) to understand how cluster topology affects version support.