Released closed milestones can be found [here](https://github.com/Icinga/icinga2/milestones?state=closed).
+## 2.11.0 RC1 (2019-07-25)
+
+[Issue and PRs](https://github.com/Icinga/icinga2/issues?utf8=%E2%9C%93&q=milestone%3A2.11.0)
+
+### Notes
+
+**This is the first release candidate for 2.11.**
+
+Upgrading docs: https://icinga.com/docs/icinga2/snapshot/doc/16-upgrading-icinga-2/
+
+Thanks to all contributors: [BarbUk](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3ABarbUk), [alanlitster](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3Aalanlitster), [mcktr](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3Amcktr), [KAMI911](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3AKAMI911), [peteeckel](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3Apeteeckel), [breml](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3Abreml), [episodeiv](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3Aepisodeiv), [Crited](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3ACrited), [robert-scheck](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3Arobert-scheck), [west0rmann](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3Awest0rmann), [Napsty](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3ANapsty), [Elias481](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3AElias481), [uubk](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3Auubk), [miso231](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3Amiso231), [neubi4](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3Aneubi4), [atj](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3Aatj), [mvanduren-itisit](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3Amvanduren-itisit), [jschanz](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3Ajschanz), [MaBauMeBad](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3AMaBauMeBad), [markleary](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3Amarkleary), [leeclemens](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3Aleeclemens), [m4k5ym](https://github.com/Icinga/icinga2/pulls?q=is%3Apr+author%3Am4k5ym)
+
+### Enhancements
+
+* Core
+ * Rewrite Network Stack (cluster, REST API) based on Boost Asio, Beast, Coroutines
+ * Technical concept: #7041
+ * Requires package updates: Boost >1.66 (either from packages.icinga.com, EPEL or backports). SLES11 & Ubuntu 14 are EOL.
+ * Require TLS 1.2 and harden default cipher list
+ * Improved Reload Handling (umbrella process, now 3 processes at runtime)
+ * Support running Icinga 2 in (Docker) containers natively in foreground
+ * Quality: Use Modern JSON for C++ library instead of YAJL (dead project)
+ * Quality: Improve handling of invalid UTF8 strings
+* API
+ * Fix crashes and problems with permission filters from recent Namespace introduction #6785 (thanks Elias Ohm) #6874 (backported to 2.10.5)
+ * Locks and stalled waits are fixed with the core rewrite in #7071
+ * schedule-downtime action supports `all_services` for host downtimes
+ * Improve storage handling for runtime created objects in the `_api` package
+* Cluster
+ * HA aware features & improvements for failover handling #2941 #7062
+ * Improve cluster config sync with staging #6716
+* Checks & Notifications
+ * Ensure that notifications during a restart are sent
+ * Immediately notify about a problem after leaving a downtime and still NOT-OK
+ * Improve reload handling and wait for features/metrics
+ * Store notification command results and sync them in HA enabled zones #6722
+* DSL/Configuration
+ * Add getenv() function
+ * Fix TimePeriod range support over midnight
+ * `concurrent_checks` in the Checker feature has no effect, use the global MaxConcurrentChecks constant instead
+* CLI
+ * Permissions: node wizard/setup, feature, api setup now run in the Icinga user context, not root
+ * `ca list` shows pending CSRs by default, `ca remove/restore` allow to delete signing requests
+* ITL
+ * Add new commands and missing attributes - thanks to all contributors!
+* Windows
+ * Update bundled NSClient++ to 0.5.2.39
+ * Update agent installer and OpenSSL
+* Documentation
+ * Service Monitoring: How to create plugins by example, check commands and a modern version of the supported plugin API with best practices.
+ * Features: Better structure on metrics, and supported features.
+ * Basics: Rename `Custom Attributes` to `Custom Variables`.
+ * Basics: Refine explanation of command arguments.
+ * Distributed: Reword `Icinga client` into `Icinga agent` and add new images for scenarios and modes.
+ * Security: Add TLS v1.2+ requirement, hardened cipher lists
+ * Technical Concepts: TLS Network IO, Cluster Feature HA, Cluster Config Sync, Core Reload Handling.
+ * Development: Rewritten for better debugging and development experience for contributors including a style guide. Add nightly build setup instructions.
+ * Packaging: INSTALL.md was integrated into the Development chapter available at https://icinga.com/docs too.
+
+
+
+
+## 2.10.5 (2019-05-23)
+
+[Issues and PRs](https://github.com/Icinga/icinga2/milestone/81?closed=1)
+
+### Bugfixes
+
+* Core
+ * Fix crashes with logrotate signals #6737 (thanks Elias Ohm)
+* API
+ * Fix crashes and problems with permission filters from recent Namespace introduction #6785 (thanks Elias Ohm) #6874 (backported from 2.11)
+ * Reduce log spam with locked connections (real fix is the network stack rewrite in 2.11) #6877
+* Cluster
+ * Fix problems with replay log rotation and storage #6932 (thanks Peter Eckel)
+* IDO DB
+ * Fix that reload shutdown deactivates hosts and hostgroups (introduced in 2.9) #7157
+* Documentation
+ * Improve the [REST API](https://icinga.com/docs/icinga2/latest/doc/12-icinga2-api/) chapter: Unix timestamp handling, filters, unify POST requests with filters in the body
+ * Better layout for the [features](https://icinga.com/docs/icinga2/latest/doc/14-features/) chapter, specifically metrics and events
+ * Split [object types](https://icinga.com/docs/icinga2/latest/doc/09-object-types/) into monitoring, runtime, features
+ * Add technical concepts for [cluster messages](https://icinga.com/docs/icinga2/latest/doc/19-technical-concepts/#json-rpc-message-api)
+
+
## 2.10.4 (2019-03-19)
### Notes