Here in Tokyo, the real D500 has been on display at Nikon showroom for more than a month. The body is slightly larger than D750, but the grips of both models feel very similar. The live view response is noticeably more responsive than that of any previous models, but still not as fast as that of Canon.
By the way, one of the Sony factories that produces image sensors was affected by the recent earthquake in Kumamoto prefecture, Kyushu. Nikon announced that their production plan will be affected and that they are investigating the situation. The release date of D500 (28th of this month) hasn't been changed...as yet.
Nikon did postpone the release of the new compact cameras until July. But the reason was that they found difficulty in adjusting the software.
They also postponed the release of the compact cameras with 1" sensor for indefinite term. They say that they found the "significant" bug in the image processing chip.