Nikon press-conference on Thursday August 19 at 10AM Denmark time (4AM NYC time)
Danish website Zoom.dk has written on their site (computer-translated) that they will be attending a Nikon press-conference and live-blogging on their website from the event. The event will begin at 10AM on Thursday August 19, Danish time (CEDT).
Based on the time shown for Copenhagen at TimeAndDate.com (we don't know where the event will be or whether Denmark has multiple time-zones), this should be Thursday August 19 at 4am New York City time! (someone please double-check the time-math, it's late at night!)
Please keep in mind that the online announcement may or may not happen at the same time. Sometimes the press releases go live on the internets before the official press events in the "real world".