I couldn't tell you, but since Debian 12 is moving into Stable you can see for yourself with a apt-get full-upgrade. For a little while, you'll be as close to cutting edge as Stable gets.
I'll check. The point is that software for web development is not installed with debs but with their own package managers (rvm, npm, pip) or meta managers (asdf) or docker so I'm cutting edge no matter what I get from the distro. Same thing for browsers. I downloaded Firefox from Mozilla and it auto updates more gracefully than the deb I had in Ubuntu: it suggests a restart and doesn't force it when I open a new tab. Chrome has its own apt, I think.
About the rest of the software, it's not very important which version I have. Actually, staying for years on an older Gnome shell won't force me to spend time to adapt to or disable new weirdnesses. Libre Office from n years ago would be OK. Evince, the same. Nautilus, give me the one from 2008.
