Certainly todays announcements seem to mesh with a new DX camera being released imminently, but oddly not a pro body style aimed at serious prosumers/pros.
The 18-140 F/3.5-5.6 VR is surely meant to be a kit lens to be bundled with some very soon to be released camera right? I mean of all the DX lenses one could have released (including an update to the much beloved 16-85 or 17-55 or some UWA prime action) - surely this is not the one Nikon choose to just release into the market unattached to a bundle? I honestly can't think of a single person who was saying, if only they shortened the 18-200 to a 18-140 or extended the 18-105 to a 18-140. I mean if they released a 18-140 F/4....maybe...but surely this is meant to be the 18-105 replacement - the ultimate cheap and cheerful kit lens (along with the 18-55).
Also the SB300 also screams compact, cheaper, volume sale item.
Reading the tea leaves is so hard to do, but someone suggested that Nikon's next DX camera might be a stroll into the mirrorless market - that would make some sense given these announcements as the D3200, D5200 and D7100 are all basically brand new and not up for refresh. Perhaps there are 2 DX cameras coming? Who knows at this point.