This is fdupes 2.4.0. If you're an end-user then you probably want the file named fdupes-2.4.0.tar.gz. The other archives are created automatically by GitHub and are intended for developers.
Changes from 2.3.2 to 2.4.0:
- Add quick summary option that skips byte-for-byte match confirmation.
- Reduce number of progress indicator updates for better performance.