Patch 1.10 goes live today hopefully it will be better than the fiasco in America.
Servers are going to be down until approx 4pm gametime however to save you time later the pre-patch is out already
Prepatch downloads
Patching takes some time so if you get chance i'd download it before the servers come back up (Fingers crossed )
Looks like the servers are slowly coming back up, (17:06 Gametime) but i wouldn't hold you breath tonight, Weather effects are here, (i was on the test server so, I 've been asked before about performance for weather, it looks like just a server tag "It's snowing" etc. so there shouldn't be any server lag, just local performance issues, for which there is a slider (in video options??) to select intensity like you would for detail etc.)
Besides it frightening how Elwynn forest comes even more depressing when it's raining What Duskwood is like i've yet to experience)
One other patch note a lot of UI add-ons won't work (there is a new block on Macros involving movement, to stop auto-farmers i suppose) So make sure you update them, autobuff is a no-go at the moment though.