Quoting official announcement:
Expand the power of your Mac with Microsoft Virtual PC for Mac Version 7, the application that makes it possible for you to access PC-only software, files, networks and devices from your Mac. Virtual PC 7, which is compatible with the Mac G5, offers important improvements in support, speed and reliability.
New features:
– G5 Support
– Cut and Paste Between Platforms
– Share Folders and Removable Media
– Use Both Mac and PC Peripherals
– Zero Configuration Printing
– Better Graphics Handling
– Fast Save
– Expanded Preferences
Read more at the official website. Take a look at the flash demo, and at the leaked screenshots.