Hello @rkk and welcome to the forum!
You can see the release notes
https://community.passbolt.com/t/new-release-v4-0-0/7424
Also, yesterday was the 3rd Community Call and they spoke and showed about the TOTP feature
https://community.passbolt.com/t/join-us-for-the-open-mic-community-call-24th-august-2023/8188/4