Filed under: Cellphones, HandheldsNow that Uncle Walt has gone and opened the floodgates, details are starting to pour in on Sprint's imminent release of the Touch Diamond, a device that should actually manage to get the carrier damn close to the top of the Windows Mobile pile (for a short while, anyway). PC Magazine is now reporting that it'll be available on September 14 for $249.99 on a two-year contract after $100 rebate, a sum that would put it squarely in the "averag