Earlier this November, Microsoft released an update to their popular Remote Desktop Connection client boasting new features such as network level and server authentication, resource redirection, monitor spanning and 32 bit color and font smoothing. While catching up on some 2006 blog posts I came across a Macworld article ( Microsoft updates Universal status of Mac apps ) confirming that Microsoft was also working on updating the Remote Desktop Connection client for the Mac:
Microsoft is also developing a new version of its Remote Desktop Connection (RDC) client software, which enables Mac users to access Windows PCs on their network. “The next version of RDC will be released as a fully supported free product and details on this release will be shared closer to launch,â€
 For more information about the Remote Desktop Connection client for Windows computers check out Remote Desktop Connection 6.0 client update is available for download in the Microsoft Download Center