Update future_changes.md

Author: IKupriyanov-HORIS

future_changes.md

@@ -1,10 +1,18 @@
 ## [4.11.2] - 2025-mm-dd
 
-This release is 100% compatible with Lets-Plot [v 4.7.2](https://github.com/JetBrains/lets-plot/releases/tag/v4.7.2),
+This release is 100% compatible with Lets-Plot [v 4.7.3](https://github.com/JetBrains/lets-plot/releases/tag/v4.7.3),
 GeoTools [v 33.2](https://github.com/geotools/geotools/releases/tag/33.2)
 
 ### Added
 
 ### Changed
+- `ggsave()`: Large plot dimensions without units now require explicit unit specification. <br>
+  When plot size exceeds 20 without specifying units (e.g., `ggsave(p, w=300, h=400)`), <br>
+  we ask to specify units explicitly: <br>
+  `ggsave(p, w=300, h=400, unit="px")` or `ggsave(p, w=3, h=4, unit="in")`.
 
 ### Fixed
+- Multiline support for axis labels in polar coordinates.
+- When the plot size in `ggsave()` is specified in pixels, `dpi` now affects <br>
+  only the physical size, not the pixel dimensions as before.
+- Blocking `SwingUtilities.invokeAndWait()`  call in plot image export (AWT backend)