I have a confirmation on the Nikon press conference in the UK: the magic will happen on Wednesday, July 29th 2009 at 2:30 pm in the Charlotte Street Hotel in London. This is one of those 100% sure rumors. Soon I will have the event info for few other countries.
I still do not have a confirmation on the second Nikon press conference that was scheduled for August 4th in Sweden. It could be that different countries may have event scheduled at different times (in Sweden the events were listed for July 30th and August 4th).