Docs: add an empty v2.5 release notes section (grafana#5533)

docs/sources/release-notes/_index.md

@@ -7,5 +7,6 @@ weight: 100
 Release notes for Loki are in the CHANGELOG for the release and
 listed here by version number.
 
+- [V2.5 release notes](../release-notes/v2-5/)
 - [V2.4 release notes](../release-notes/v2-4/)
 - [V2.3 release notes](../release-notes/v2-3/)

docs/sources/release-notes/v2-5.md

@@ -0,0 +1,54 @@
+---
+title: V2.5
+weight: 77
+---
+
+# Version 2.5 release notes
+
+Loki 2.5 focuses on X items:
+
+- item 1 here
+- item 2 here
+
+## Features and enhancements
+
+- Feature description here.
+- Another feature description here.
+
+For a full list of all changes please look at the [CHANGELOG](https://github.com/grafana/loki/blob/main/CHANGELOG.md).
+
+## Upgrade Considerations
+
+**Do we need this section?**
+
+Please read the [upgrade guide](../../upgrading/#240) before updating Loki.
+
+We made a lot of changes to Loki’s configuration as part of this release.
+We have tried our best to make sure changes are compatible with existing configurations, however some changes to default limits may impact users who didn't have values explicitly set for these limits in their configuration files.
+
+### v2.5.0 changes to defaults
+
+**Do we need this section?**
+
+Here is a list of limit defaults that have changed in v2.5.0:
+
+| config | new default | old default |
+| --- | --- | --- |
+| param name here | new value | old value |
+
+## Bug fixes
+
+### 2.5.0 bug fixes
+2.0.0 fixes these bugs:
+
+- [PR XXXX](https://github.com/grafana/loki/pull/XXXX) **github-handle**: Description of the bug fix here.
+
+## Security fixes
+
+**Do we need this section?**
+
+### 2.5.0 security fixes
+
+Version 2.5.0 contains X security-related fix:
+
+* [PR XXXX](https://github.com/grafana/loki/pull/XXXX) Description of security-related fix here.