diff --git a/TODO.md b/TODO.md
index e33230c..0f4e281 100644
--- a/TODO.md
+++ b/TODO.md
@@ -2,10 +2,6 @@
 
 Notes for "next time".
 
-## v4
+## v4.x
 
 * Engraving some cosmetic stuff? Or maybe a place to mount other plates?
-* Try making it so top plates are bolted in from the side of the frame rather than the top
-    * I'm thinking of abandoning this, because it makes the frame more complicated to have a portion of a column rather
-      than the full column, but I'll keep it here for a bit longer
-* Try making frames out of four pieces connected at joints on the hex posts, rather than one large piece?