They haven't fixed the bug I've had since Tahoe, where Dock icons render with no anti-aliasing. I thought they had as everything was rendering correctly when I first installed the update, but after my first reboot they're back to a pixelated mess. It looks awful.

What's worse is that, while I can find other reports online, it doesn't seem to be a particularly widespread bug (my work Mac doesn't exhibit it at all), which means I'm probably gonna have to wait for it to be fixed incidentally when some Apple engineer makes an unrelated change to the Dock codebase in about four years time.