For that use case, last year's Parallels Desktop 11 release is still good enough. While Parallels can run just about any operating system in a virtual machine, its primary purpose is letting Mac users run Windows applications. Parallels Desktop 12 for Mac is thus being announced today, but there isn't much to be excited about. The new versions often coincide with major new Windows and Mac operating systems, requiring major software changes to bring new Windows features to Apple computers or to make sure everything keeps working properly. Like clockwork, Parallels releases a new version of its desktop virtualization software for Mac computers every year.