Welcome to FreeCAD 1.0!
The most notable improvements over the 0.21 release series are:
- the inclusion of the topological naming problem mitigation code,
- an integrated assembly workbench,
- a new materials system,
- and many UI/UX improvements.
https://www.youtube.com/watch?v=x5oXSGhK7EY
Release Notes: https://wiki.freecad.org/Release_notes_1.0