Update new_pages.md

Author: alexanderpann

src/doc/docs/about/new_pages.md

@@ -5,6 +5,10 @@ tags:
 
 This page lists all new pages since August 2022.
 
+## April 2025
+
+- [MPS Internals: Generation Plans](mps_generation_plans.md)
+
 ## April 2024
 
 - [Reference: Annotations](annotations.md)
@@ -88,4 +92,4 @@ This page lists all new pages since August 2022.
 - [Reference: Tips for OS Maintainers](tips_for_os_maintainers.md)
 - [MPS internal: IntelliJ Integration](intellij_integration.md)
 - [MPS internal: JCEF](jcef.md)
-- [MPS internal: Navigating the MPS Sources](navigating_mps_source.md)
+- [MPS internal: Navigating the MPS Sources](navigating_mps_source.md)