add release note for gzip and pin switching
* We've restyled the resource metadata displayed in a get step on the build page. It should be easier to read and follow, let us know your critiques on the issue. #4421 #4476
-#### <sub><sup><a name="v561-note-git-resource-273" href="#v561-note-git-resource-273">:link:</a></sup></sub> fix
+#### <sub><sup><a name="v561-4470" href="#v561-4470">:link:</a></sup></sub> feature
+
+* GZIP compression is applied to response of all API endpoints. It should help saving bandwidth and making web UI loads faster. #4470
+
+#### <sub><sup><a name="v561-4448" href="#v561-4448">:link:</a></sup></sub> feature
+
+* Fly can now pin a resource without unpin it first. #4448
+
+#### <sub><sup><a name="v510-note-git-resource-273" href="#v561-note-git-resource-273">:link:</a></sup></sub> fix
* @CliffHoogervorst fixed an [issue](https://github.com/concourse/git-resource/issues/275) in the [git resource](http://github.com/concourse/git-resource), where the version order was not correct when using [`paths`](https://github.com/concourse/git-resource#source-configuration) concourse/git-resource#273.
