Well, GNU Social v3 will have a server-side LaTeX to SVG rendering for status updates.
(I think Gajim and Pidgin have plugins that support LaTeX in XMPP clients? No idea how any of them handle it.)
I’m glad Fractal is still actively developed. I’ve given up on the Qt based applications because they’ve fallen behind Element. I hate that it doesn’t fit with the rest of my DE though 