You shouldn't make an assumption just because the staff at the shop doesn't know the launch date. Most of them only know how to sell phones they get from the main HQ. They don't even do research about the company they are working and its upcoming products. Try asking Nokia store staffs about the upcoming E55 or E52, don't be surprise if some of them tell you 'Got such phone meh?' . I feel like is a waste of time asking them question. You can get all the answer you want from the internet 100 times faster asking them.