From Microsoft Watch: Microsoft's been talking up its plans to take on Research In Motion and its beloved Blackberry for months now. On Friday, Microsoft is finally set to put its bits where its mouth has been. On August 19, Microsoft is planning to make available for download a Community Technology Preview (CTP) build (in lieu of a beta) of Exchange Server 2003 Service Pack (SP) 2. Along with a pending Windows Mobile 5.0 Feature Pack, SP2 is at the heart of the push e-mail platform that the Redmondians are readying.