I read this small "review" at Networkcomputing.com. Some highlights: "Windows Server 2008's eagerly awaited Terminal Services is a respectable presentation virtualization alternative for smaller shops, but for large enterprises, Citrix Systems still reigns supreme. That's the--not unexpected--finding of the first installment in our ongoing Windows Server 2008 Rolling Review. From a product-positioning perspective, Microsoft is walking a fine line, responding to calls for more core Terminal Services functionality in Windows Server, yet keeping its hands mostly off the large enterprises that comprise Citrix's core audience."

"For small to midsize enterprises with simple presentation virtualization needs, Terminal Services will definitely fill the bill. But organizations that must scale to thousands of users will need the compression, acceleration, load balancing, and management options that only XenApp provides. According to Citrix, a new version of XenApp that will build on improvements within Terminal Services 2008 will be released later this year".

Read Rolling Review: Citrix XenApp Vs. Windows 2008 Terminal Services .