So, I have known old royal stock from kono store.  Almost all of my new stock switches mesure at 1.28mm on average, they fluctuate -+ 1 mm.

The recent jades and whites that I got are on average 1.31mm, again, they fluctuate -+ 1mm.

The old stock measured 1.33mm, with the same -+ 1mm fluctuations. 

So the jades and whites that I got are much more similar to the older stock, I'm not sure if the factories have multiple tooling or what.  I think that cherry is 1.32mm, and I can imagine that most keycaps can handle a +1mm increase before having any problems. 

And before anyone suggests that this is yet another retool, I got freshly restocked royals that mesure at 1.28, so that's not it.