SharePoint 2010 has just been released, and I've downloaded the Setup from MSDN and attempted to run it on a laptop that meets the SharePoint hardware requirements (quad-core, 8MB RAM) and is running 64-bit Windows 7 (Home Premium). Both SharePoint Server Setup and the SharePoint Preparation Tool report that this operating system is not supported, and they point to online Help that says that Windows Server 2008 is required. This seems to contradict the diagram and explanation on this page, which says that SharePoint 2010 can be installed on 64-bit Windows 7 for development purposes. What am I missing?