Upload & Sell: Off
I'm guessing you already made up your mind but I would wait for that unicorn called the D400. I'd love to have a D4 as well but I know it's not going to get me anything I "need" over my D7100. Sure I want faster FPS and a bigger buffer among other things but in the end that will just end up as actuation's wasted (for me). Of course if my budget was unlimited I'd get them all.
Have not made up my mind just yet. May just wait to see if a D400 does come in the next 4 months or so.
I really don't need it ASAP, but would like something before fall starts.