After D600 was announced and after weeks and weeks of research and debating with myself I decided I’ll stay with DX for some more time. Money driven decision - Good DX gear is being dumped and can be picked at sensible price and served well for hobby or pro work. 17-55 for $750, 18-135 (just can't believe how sharp this lens is) for $110, Sigma 10-20 for $250 (on its way). If I’ll find 10.5 and 10-24 for a good price I will take those as well.
Only one thing I need from new D7100 - it is improved LV mode for macro (remove mirror slap and shutter below 1/30). I can leave with 16mp, but 24mp with the same ISO performance only a plus. Buffer size was my main complaint 1.5 years ago - now I can leave with it.