Virtual machines (VMs) can be set to automatically return unused disk space when shutting down.Windows Travel Mode can increase laptop battery by up to 10 percent longer.DirectX 11 is now up to up to 20% faster and OpenGL 3 graphics are improved in Windows and Linux.One of the key reasons to upgrade a virtualization application each year is to maintain the highest level of compatibility with the latest versions of macOS. The most important aspect of Parallels 16 is that it is ready for macOS Big Sur host and guest when macOS Big Sur is released to the public this fall. Parallels, the popular way to run Windows, Linux, and even other versions of macOS, has just released version 16 with some exciting new features for those that require virtualization.