Tried the D610 with a few sample shots using Nikon's 50mm f1.8g lens at Henry's up in Canada. After a few shots. I was so impressed with the results I bought this prime lens for my D600 and D300. Sample shots of this lens on the D600 were much sharper than the images shot with the kit lens 24-85mm AFS F3.5-4.5 shot at 50mm.
So why do I want the D610? Damn I love this technology
PS haven't had any of the issues with my D600 that some described as oil spots of dust on the sensor