I just came across an announcement on Nikon's website about launch events for the D5 and D500 to be held in various cities throughout the U.S., beginning the second week of February and going into early March. It appears you need to contact your preferred dealer to confirm attendance.
Here is the website with a list of all the participating dealers - http://www.nikonusa....d500/index.page
From the announcement:
Come experience the future of DSLR performance.
You’re invited to join us at select Nikon dealers nationwide and be among the first to experience Nikon’s thrilling new flagships, the D5 and D500. These game-changing DSLRs introduce a new era of speed, accuracy, image quality, video capabilities and low-light performance. Test drive the cameras, speak with Nikon product experts, dealer staff, fellow photographers and more.
Seating is limited at each event, so don’t miss out!
First 50 attendees through the door will receive a special gift exclusive to this event!