Putting it down to the intelligent development work by Microsoft software engineers, Windows 7 is not only looking to have a smaller OS footprint than Vista, but also come with improvement power management for enhanced battery life, enhanced media capabilities and increased reliability, stability and security.
PressPass: How is Microsoft supporting small-notebook PCs with Windows 7?
Brooks: Microsoft is offering a clear path for Windows 7 across the board, so as we demonstrated at PDC, WinHEC and CES, Windows 7 provides a great user experience on small-notebook PCs.
With Windows 7, we've matched hardware improvements with some investments of our own. With Windows 7 we are on track to have a smaller OS footprint; an improved user interface that should allow for faster boot-up and shut-down times; improved power management for enhanced battery life; enhanced media capabilities; and increased reliability, stability and security.
These engineering investments allow small notebook PCs to run any version of Windows 7, and allow customers complete flexibility to purchase a system which meets their needs. For OEMs that build lower-cost small notebook PCs, Windows 7 Starter will now be available in developed markets. For the most enhanced, full-functioning Windows experience on small notebook PCs, however, consumers will want to go with Windows 7 Home Premium, which lets you get the most out of your digital media and easily connect with other PCs.
You can find the full Q&A here and the official details on Windows 7 SKUs here.