Reflect the current status of Unit on the community page

Cc: Maryna Herasimovich <m.herasimovich@f5.com>
Signed-off-by: Andrew Clayton <a.clayton@nginx.com>

Author: ac000

source/community.rst

@@ -8,6 +8,24 @@
 Community
 #########
 
+**********************************
+Maintenance and support guidelines
+**********************************
+
+New features and enhancements for NGINX Unit are not actively developed by the
+project maintainers. While community contributions are welcome, the decision to
+include new features or enhancements in NGINX Unit releases remains at the
+maintainers’ discretion. Given reduced capacity, NGINX Unit maintainers will
+prioritize addressing issues with significant technical, quality, and security
+impact. This includes resolving segfaults, undefined behavior, updates to the C
+language and compiler, revisions to language modules, and patching third-party
+libraries with security vulnerabilities to ensure the product maintains robust
+operation, quality, and security standards.
+
+************
+Discuss Unit
+************
+
 The `Discussions section <https://github.com/nginx/unit/discussions>`_ of the
 Unit repo is the main place for discussing any topics related to the NGINX Unit project.