Update PULL_REQUEST_TEMPLATE.md

Author: leastprivilege

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,13 +1,5 @@
-**At this point we cannot accept PRs for new features, only bugfixes. Thanks!**
+**At this point we cannot accept PRs anymore. Thanks!**
 
-**What issue does this PR address?**
+This organization is not maintained anymore besides critical security bugfixes (if feasible). This organization will be archived when .NET Core 3.1 end of support is reached (3rd Dec 2022). All new development is happening in the new [Duende Software](https://github.com/duendesoftware) organization. 
 
-
-**Does this PR introduce a breaking change?**
-
-
-**Please check if the PR fulfills these requirements**
-- [ ] The commit follows our [guidelines](https://github.com/IdentityServer/IdentityServer4/blob/main/.github/CONTRIBUTING.md)
-- [ ] Unit Tests for the changes have been added (for bug fixes / features)
-
-**Other information**:
+The new [Duende IdentityServer](https://duendesoftware.com/products/identityserver) comes with a commercial license but is [free](https://blog.duendesoftware.com/posts/20220111_fair_trade/) for dev/testing/personal projects and companies or individuals making less than 1M USD gross annnual revenue. Please [get in touch with us](https://duendesoftware.com/contact) if you have any question.