Parallels Desktop 12 for Mac Comes With Sierra Support, Standalone Toolbox App - Mac Rumors

See this Parallels press release for more details

"New features in Desktop 12 include having Windows 10 "always on" in the background, the ability to instantly launch Windows apps, the ability to schedule incremental backups and Windows updates, the ability to assign special behaviors to Windows apps, improved integration for Microsoft Edge, Outlook, and Office 365, and Xbox app support. Additionally, Parallels has partnered with Blizzard to provide specific support for the hit game Overwatch.

Version 12 also includes 90 percent faster snapshot creation, 60 percent faster suspension of VMs, 25 percent faster shared folder performance, 25 percent faster compilation of Visual Studio projects, and up to 10 percent in battery life improvements for "certain environments.""

Parallels Desktop 12 for Mac Comes With Sierra Support, Standalone Toolbox App - Mac Rumors