I'll do some if I ran out of 5.5PCB's
and not before.
It's again some small step further, but not a big jump as from the 3.1 to the 5.2.
Changes between 5.5 / 5.6 / 6.0:
5.5 - 5.6: Some pullups on the USB3 connector (nobody using till now) / switch to manually switch on/off the fan
5.6 - 6.0: Switch for the fan is gone agin, but now the possibility to power the and with 3V or 5V / single resistors exchanged to resistor networks.
Sorgelig might correct me (maybe I've overseen something) - but this is more or less all.
Changing to resistor networks will give some benefit for the people who solder the boards as it will reduce the time for solder a board. The the user there is no change. Picture is generated exactly the same.
@Sorgelig: in the Schematics you refer to R beeing 240R or 300R - have you done some calculations about the wave resistance for the R2R Network.
If I remember right the older one with the R1=510R has been quite near to the theoretical needed 75R?
Don't want to blame you - you say tested in the Schematics and if you write this I know that it will work - this is (at leat for me) just an academic question.
(And beeing at my first coffee this morning and too lazy to calculate by my own
So for the End User there is no big relevant change - you might see it different, but there is some no real need to hunt for a 6.0.
If you can wait - then wait - if you are want to buy now, buy a 5.5 or 5.6 one - I've desribed the differences above - and (at least in my opinion) they are minor.