D7000 is a pretty smokin' deal right now.
Super busy, D600 is pretty great so far...
a couple of full res samples ISO 6400
my theory right now: D7000 continues on at sub $1000 price. New D300s high end DX model at the rumored $1600 D600 price.
If the D600 is $2000 and D400 is $1600 no one will buy the D400. IMO both D400 and D7100 should go down market.
7D2 probably will go down market too.