Microsoft expects to have a public beta of Windows 7 Service Pack 1 (SP1) out by next month. There won't be any new Windows 7-specific features and most of the bug fixes have already been released making it a largely ceremonial milestone that many companies like to pass before they deploy. There will be some new Hyper-V features apropos of cloud computing and graphics acceleration widgetry for remote desktops. A public beta of a service pack for Windows Server 2008 R2 is also due in July. By the way, Windows Server AppFabric has RTM'd. It's supposed to simplify the development and management of composite applications by improving speed, elastic scale and high availability through distributed caching capabilities and new tools.