LOv7.3 is due for release in early February 2022. Release plan is here
https://wiki.documentfoundation.org/ReleasePlan/7.3#7.3.0_release
Release notes are here https://wiki.documentfoundation.org/ReleaseNotes/7.3
For early builds (alpha), start here and click through your platform
(Win, Mac, Linux) to the "current" folder.
https://dev-builds.libreoffice.org/daily/master/
Have fun!
--Jean