Darkfall is under NDA right now, so while I’m writing about it, I can’t post details until the NDA is down. Whenever that happens (current date I have is Dec 27th) expect either a long post, or a bunch all in rapid fashion.
Without breaking NDA, I will say that DF:UW is indeed a sequel to DF1, rather than the suspected ‘large patch’. It’s also already provided a single high point above anything in my one month trip to 80-ending in GW2, and done more to encourage grouping than any ‘fix’ to the formula that Anet aimed at. Wish I could say more, but ‘soon’.
I’ll be deleting any comments that break NDA here, so save me the clicks and don’t if you are in the beta.
Hardcore Casual 
So without breaking NDA, you’re smiling more than you’re frowning? Good stuff!
ooh, I’m excited now
If they have added some sort of faction-based auto-grouping that will be a big +1 for me.
Racial Factions are out as detailed in the promotional materials.
This comment decided it would be funny to break the NDA, I disagree! -SynCaine