Discourse can be called the leading open source free software to build a community. It is a forum software which defied all the natural conventions about a forum community and still managed to survive till date with a very positive reputation.
Discourse has a very active development cycle. The come up with minor and major versions very often. This time it is their major version with support for hardware security keys
I have seen something like this when our office used an accounting software named Tally.
It is not just the hardware security keys, v2.4 of Discourse comes with better polls, on click upgrade from the dashboard, assign awards in bluk, better integration and handling of emojis, improved API key security, Tag enhancements, revamped user menu, strict CSP on by default, improvements in inserting hyperlinks etc.