RIM's released a list of BlackBerry models that will be compatible with upcoming operating system, BlackBerry Device Software 5.0. The supported handsets include the following:
BlackBerry Pearl Flip 8200 series smartphones
BlackBerry Curve 8330 smartphones
BlackBerry Curve 8350i smartphones
BlackBerry Curve 8900 smartphones
BlackBerry Bold 9000 smartphones
BlackBerry Storm 9500 series smartphones Verizon Now live!!
BlackBerry Tour 9630 smartphones
RIM notes that it is up to your wireless carrier if it'll support the OS upgrade. BlackBerry smartphones must have more than 64MB of memory to support this version of the BlackBerry Device Software. Verizon's already made the upgrade available for the first version of the BlackBerry Storm. It plans to ship the second edition, the BlackBerry Storm2, later this week.
BlackBerry Storm users can upgrade through RIM's site, the BlackBerry Desktop Manager, or through Verizon here.