Add: Announcement post for 15.0 (#368)

Author: 2TallTyler

_posts/2026-01-01-openttd-15-0.md

@@ -0,0 +1,27 @@
+---
+title: OpenTTD 15.0
+author: 2TallTyler
+---
+
+New Year, New You, New OpenTTD!
+
+OpenTTD 15 is now out and ready for you to play!
+
+New features include:
+* Companies in multiplayer no longer have passwords, invite specific players using buttons in the Online Players list instead
+* Island maps can be surrounded by infinite water instead of void
+* Rivers can end in wetlands if unable to reach sea
+* Bridges can be placed over stations and road stops
+* Roads can now have waypoints
+* Houses can be placed manually
+* Industries and towns have graphs of their cargo history
+* Improvements to menus, including a new main menu and a combined game options and settings window
+* Many more features, changes, and fixes
+
+For a full breakdown of new features, check out [this video by Master Hellish](https://www.youtube.com/watch?v=Q3iDSxrqAPE).
+
+We'll be gathering any bugs for a future 15.1 release, so if you find any, please [report them here](https://github.com/OpenTTD/OpenTTD/issues/new/choose).
+
+* [Download](https://www.openttd.org/downloads/openttd-releases/latest.html)
+* [Changelog](https://cdn.openttd.org/openttd-releases/15.0/changelog.md)
+* [Bug tracker](https://github.com/OpenTTD/OpenTTD/issues)