Yesterday Nikon announced the D7100, this is now there top of the range DX body.
There are a few surprises, the Pro Autofocus system from the D4, and even more surprising no anti aliasing filter like the D800E. There is no option for a version with the filter. I assume Nikon think that with 24 MP in a DX crop sensor the resolution is high enough to stop most cases of Moire.
Its a surprising and brave move.
While its not quite a D300s replacement, due to that cameras age it certainly outclasses it in most areas and will certainly have a number of D300s users upgrading to this.
If you want to know more check out the usual websites.