I don't see anything in the rules about it, sorry if I missed it
by version I also mean different patches btw
There currently is no rule regarding patch version.
As of right now, afaik, the newest patch isn't even available on all platforms due to limitations with pushing updates to console eshops. It's been less than a month since release and many things have changed as far as what's in various patches but once the version is finalized and available across all platforms that might change as the general consensus so far is leaning to using the most up to date version.
Everest had one of the biggest updates so far with Everest Core becoming the "Stable" version. Here is what you need to know as a player and what rule changes are happening:
To put it in layman's terms, they're updating the game to use a newer framework. Which
