all new generation blackberries including the tour, bold, 8900, storm and upcomers that have been mentioned around the site are gonna have the 5.0 OS available to them, hope i helped
gonna have to find out when its released and then install it using desktop manager or, if your tour has it and im sure it does, when the 5.0 is released by verizon you can update straight from ur phone in the menu for options then advanced options and then all the way at the bottom is an update option