Wednesday's statement says British-educated expert Nicholas Reeves has been invited to Cairo in September to debate his theory with Egyptian colleagues.
It says there could also be a joint expedition to Luxor, where the 18th Dynasty King Tut's tomb is located.
Reeves argues that Tut, who died suddenly at the age of 19, may have been rushed into an outer chamber of Nefertiti's original tomb. He says high resolution images show Tut's tomb might have two unexplored doorways.