diff --git a/ROADMAP.md b/ROADMAP.md
index 13ccdf16..91c672a4 100644
--- a/ROADMAP.md
+++ b/ROADMAP.md
@@ -9,7 +9,7 @@ once.
 | M0 | Skeleton: crates, compositor, the After Effects style shell, control channel, `cargo xtask` | Done (web build: [docs/web.md](docs/web.md)) |
 | M1 | Keyframes: temporal and spatial interpolation, Easy Ease, roving, velocity | Done |
 | M2 | Compositing: 38 blend modes, track mattes, parenting, adjustment layers | Done |
-| M3 | Project operations: settings dialogs, layer commands, `.ecproj`, undo, After Effects menu bar | Mostly done |
+| M3 | Project operations: settings dialogs, layer commands, `.ecproj`, undo, After Effects menu bar | Done (unsaved-changes prompts, Solid / Layer Settings, lock-aware layer commands, safe project files; View ▸ New Viewer still opens only the one locked viewer) |
 | M4 | Preview: precomps, motion blur, cached playback | Mostly done |
 | M5 | Timeline depth: graph editor, keyframe clipboard and dialogs, time remapping, pick-whips, expression editor | Done |
 | M6 | Shapes, masks and footage: shape operators, masks and the pen tool, video and image import | Done |