Adding announcement about site update.

Author: Jacek Gębal

docs/announcements/posts/2026-06-15-website-navigation-improvements.md

@@ -0,0 +1,35 @@
+---
+layout: post
+title: "Website navigation improvements"
+date:
+  created: 2026-06-15
+categories:
+  - "website"
+---
+
+We've been busy improving the utPLSQL website experience over the past couple of days.
+
+<!-- more -->
+
+## Shared navigation bar
+
+The top navigation bar shared across all utPLSQL sites has been redesigned and refactored.
+It is now more consistent and makes it easier to navigate utPLSQL project and organization's pages.
+
+## Light / Dark / Auto theme switching
+
+The theme toggle has been upgraded from a simple light/dark switch to a three-way control:
+
+- **Light** — always light
+- **Dark** — always dark
+- **Auto** — follows your system preference
+
+Your choice is remembered across visits.
+
+## Announcements reorganized
+
+The Announcements are now presented in a blog-like style with categories section expanded by default, making it easier to find relevant announcements at a glance.
+The archive by year has been removed in favour of a cleaner post listing on the index page.
+
+We hope these improvements make the site more pleasant to use.
+Feel free to share feedback in the [GitHub Discussions](https://github.com/org/discussions).