Very recently Adobe officially confirmed that they plan to bring Flash 10.1 to BlackBerrys, WebOS 2.0 devices, Symbian devices, and others. These platforms will join Android 2.2, which already supports Flash.
For BlackBerrys running BlackBerry 6 with the WebKit browser, the addition of Flash will provide BlackBerry users a richer Web browsing experience. You will be able to access more sites, games, and apps on the Web.
As of now, Adobe has not published any tentative release dates for Flash 10.1 for BlackBerry, but did mention in the press release that it will become available on more devices in “the coming weeks and months.