Similar to Parallels Desktop for Mac, VMware Fusion enables users of Intel processor-based Macintosh computers to run Windows applications simultaneously with Mac OS, rather than having to restart the computer in Windows mode as required with the Apple’s Boot Camp technology.
The RC1 version incorporates improvements to “Unity”, the ability of the Fusion software that allows you to run Windows applications directly from the Mac environment. Drag and drop has also been improved and now works directly from the Finder, in addition to you can control + click on the Fusion dock icon to select a virtual machine and access the application run window and the Programs menu for that virtual machine. Unity also works with a wider variety of versions of Windows.
Mac integration has also been improved by expanding the available keyboard shortcuts (allowing Fusion to be used with software like Quicksilver and LaunchBar, for example). Hard disk performance has also been improved when using the Boot Camp-based virtual machine.
On the other hand, “experimental” 3-D graphics support has also been reintroduced for Macs that rely on GMA950-based graphics, such as MacBooks and Mac mini, in addition to offering previous support for the version of Leopard (Mac OS X 10.5) released during WWDC.
USB issues associated with Mac OS X version 10.4.10 have also been fixed, plus output from sleep state, and allow memory usage, have been improved.