Linux 6.1 should be the new LTS version, but it doesn't look like this in pacman

Same here! :confused:
Just thinking out loud with you.
I made this thread Set systemd-boot Default to LTS? as I found the system not defaulting to the LTS as used to be/expected.
So, I guess that currently my LTS is ahead of the default, it defaulted to the older (which is the main line not the LTS)