Back to Windows Phone - what's new?

Ok guys, after the Verge Mobile Show today, I'm sticking to my guns and switching back to the Lumia 920 for a little while. I usually bounce between lots of operating systems but realized it's been a couple of months since the 920 has been the main phone in my pocket.

So... What's new? Tell me what I need to know, what I need to install, what I've missed since I've used WP as my main phone. Talk to me.

For completeness, here are the apps / services I very much want. In some cases need.

  • Standard PIM: Email, Calendar, Contacts (google based)
  • Voice recording app
  • Google Docs app
  • Any.Do
  • Pocket
  • SimpleNote
  • IRC (must support SSL, desperately wish for background connection and/or push notifications)
  • Foursquare
  • Yelp
  • Seamless
  • Transit Info for Muni in SF
  • Uber
  • Zipcar
  • Instagram
  • Hangouts (google, must work with hangouts, I'm not switching to another IM service)
  • Yammer
  • GroupMe
  • Facebook
  • Twitter
  • Snapchat
  • Vine
  • Instagram
  • Feedly-compatible RSS app
  • Rdio
  • Podcast listening app
  • Crossword puzzle app
  • 1password
  • dropbox
  • Google Authenticator
  • Expensify

I could go on, but that's probably a good list for now.