No. At least not in the first 6-12 months of release, and that is irrespective of the actual specifications. I may actually be OK until Spring 2016 and a D5.
Happy with my current line up of pro-bodies and as I'm shooting as a pro I upgrade either because my kit no longer works, is fully depreciated, or because upgrading allows me to earn more money than I can at the moment (incl the cost of upgrade). Gone are the days where a new DSLR gave significant new capabilities, at a relatively low acquisition cost (£1800 for a new Canon 1D MKII for example - 4->8MP, twin card slots, high ISO quality compared to the 1D/1Ds 1600ISO was like 400ISO).
Would be interested to see if it drives more used D4 bodies, or hits D3s used prices which have held very very well.