The Sense 6 update is available on Verizon now. I just went to settings to update and it's pushing to my phone now. They aren't kidding when they say it will take 33 minutes to download - I'm currently around 20 minutes in, and it's about halfway (and I'm on a really awesome wireless network at work).
Edit: download stopped, I don't know if it ever completed, because it vanished from my notification drawer. I rebooted, but it's still the old software, so... maybe it's not fully ready-for-prime-time yet.
Second edit: it's done. I'm not sure how I feel about the Blinkfeed changes - and I can't get rid of the dock when I'm in Blinkfeed, although since it's smooth scrolling instead of page by page, that's probably not a big deal.
Not sure how I feel about the theme colors - I wish there was more customization with that. There may be, I just don't know where yet. Has to reset the font on MissedIt (which I use on my lockscreen). Those are the only middling things I've discovered so far.
Oh, I miss the clock at the top of the apps drawer. That's gone now too.