diff --git a/CHANGELOG.md b/CHANGELOG.md
index 95120c50..591b7289 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,9 +4,16 @@ Changes relevant to the users of python-tcod are documented here.
 This project adheres to [Semantic Versioning](https://semver.org/) since version `2.0.0`.
 
 ## [Unreleased]
+
+## [15.0.0] - 2023-01-04
 ### Changed
-- Updated the case of window event types to match their type annotations.
+- Modified the letter case of window event types to match their type annotations.
   This may cause regressions.  Run Mypy to check for ``[comparison-overlap]`` errors.
+- Mouse event attributes have been changed ``.pixel -> .position`` and ``.pixel_motion -> .motion``.
+- `Context.convert_event` now returns copies of events with mouse coordinates converted into tile positions.
+
+### Deprecated
+- Mouse event pixel and tile attributes have been deprecated.
 
 ## [14.0.0] - 2022-12-09
 ### Added
diff --git a/tcod/context.py b/tcod/context.py
index 414f1bd2..cc82c90f 100644
--- a/tcod/context.py
+++ b/tcod/context.py
@@ -265,7 +265,7 @@ def convert_event(self, event: _Event) -> _Event:
                     # Tile coordinates are used in the returned event.
                     print(f"Tiles: {event_tile.position=}, {event_tile.motion=}")
 
-        .. versionchanged:: Unreleased
+        .. versionchanged:: 15.0
             Now returns a new event with the coordinates converted into tiles.
         """
         event_copy = copy.copy(event)
diff --git a/tcod/event.py b/tcod/event.py
index 58ca9bac..a54eeb61 100644
--- a/tcod/event.py
+++ b/tcod/event.py
@@ -398,7 +398,7 @@ class MouseState(Event):
 
     .. versionadded:: 9.3
 
-    .. versionchanged:: Unreleased
+    .. versionchanged:: 15.0
         Renamed `pixel` attribute to `position`.
     """
 
@@ -484,7 +484,7 @@ class MouseMotion(MouseState):
             * tcod.event.BUTTON_X1MASK
             * tcod.event.BUTTON_X2MASK
 
-    .. versionchanged:: Unreleased
+    .. versionchanged:: 15.0
         Renamed `pixel` attribute to `position`.
         Renamed `pixel_motion` attribute to `motion`.
     """