If you're a new player or returning after a long absence and aren't familiar with Kingdom of Sky, or just would like a refresher for the expansion when it unlocks on December 6th, I've put together a wiki article that may help: Kingdom of Sky This is related to the more general article I've written about Varsoon, and I'll be updating that as well when the expansion unlocks. If you notice anything missing or that I've gotten wrong, please let me know.
I've updated both the Varsoon TLE Server and the Kingdom of Sky articles now that the expansion is being unlocked. I plan on working on information for Fallen Dynasty in January once we get a bit closer to it being made available. It'll probably have its own wiki page; these are starting to turn into novels, but hopefully organized in a way that still makes it easy to find what you're interested in.