Upload & Sell: On
My guess is both companies are waiting for the other to make the 'first move', so they can ensure their offering is equal or superior to the other. Eventually though, someone will have to take the first step. At least the sensor department should be no contest, until Canon upgrades their fabrication equipment or agrees to outsource. Their 5-7 year old sensor technology is starting to show their age big time.
I still believe Nikon will make a true D300 replacement, rather than mix it into a D9300 or whatever, but I am probably in the minority on that one .
With cameras like the D800 shooting 6fps at ~15MP in crop mode (maybe 7-8 FPS with the D810??), you get 2 cameras in 1, and I don't think I'll be in the market for a DX body again. There will definitely be a big market for a D400 though, especially if they get 8-10 FPS, pro AF, and a good buffer going. Wildlife and sports photographers especially. I hope they make it.
I think we'll have either the 7DMK2 or D9300/D400 by August, personally.