Is K1 hardware up to date?

Hi, I was considering getting a K1 while it’s on sale. I was wondering if new K1 s are shipped with updated hardware like unicorn nozzle, safer door hinges, smaller belt gears/spools ecc…
Basically if all well known and reported hardware issues are fixed on new machines.
Thanks in advance, have a nice day.

I just bought 5 new K1s. Not sure how to tell what features they have? If I take photos will you be able to tell? I was planning on upgrading hotend to microswiss hotend.

We can surely try