The most important is to get the amd-ucode package and linux-firmware (if you didn’t already have it, it would be unexpected if you don’t). When it comes to software tools, just uninstall tools you no longer need and adapt configurations.
It can be a lot simpler to just reinstall the OS but you can carry over your existing installation simply by installing the microcode. It’s just a little bit of a chore to adapt configurations if you need to do so.
It’s less of a pain to fresh install than undo various configurations done over time.
On my 12th Gen board, I have kernel parameters that help save battery in sleep, disable hid sensor for brightness keys to work, config for wifi card, disabling watchdog, fixed pci quirkiness powertop complaints about, etc
Some of these issues will likely won’t exist in the new amd board or even 13th gen board.
A few other quirks I’ve noticed going from Intel → AMD – it seems like the AMD sound card can’t handle PIPEWIRE_LATENCY=64/48000 (I use this because I use my laptop as a guitar amp) compared to the intel one.
I had to remove that from my ~/.config/environment.d to get audio to stop crackling (unless I use an external DAC)