Parallels today announced the launch of Parallels Desktop 9 for Mac, the latest version of the company's software for running alternate operating systems such as Windows in virtualized environments on the Mac. The new version is available today as an upgrade for existing Parallels users, and it goes on sale for new customers September 5, in line with pre-order information that began popping up earlier this month. Parallels Desktop 9 brings a number of new features and enhancements, including faster performance and support for Apple's upcoming OS X Mavericks and Microsoft's Windows 8.1, while also building in new support for a number of cloud services. Among the main features of Parallels Desktop 9 are: