# What’s new in CotEditor 4.0 on Mac

Brand-new user interface for the Big Sur era
  CotEditor now has a new look. The document window, icons, and until details were delicately re-designed to be suitable for macOS 11 Big Sur.
Ready for Apple silicon
  CotEditor 4.0 is a universal binary and runs natively on both Apple silicon and Intel-based Mac computers.

## See also

- Release notes
- What’s new in CotEditor 3.9?
- What’s new in CotEditor 4.1?