Direct3D 11, Direct2D, DirectWrite, DXGI 1.1, WARP and several other components will be available for Windows Vista SP2 and Windows Server 2008 SP2 by installing the Platform Update for Windows Vista.
Additional theme packs are available as free downloads from Microsoft's web site.
Windows 7 includes a desktop slideshow that changes the desktop background in a designated amount of time with a smooth fading transition. This feature supports pre-downloaded sets of wallpapers and also supports photo RSS feed.
Windows 7 incorporates many engineering changes to reduce the frequency of writes and flushes, which benefit SSDs in particular since each write operation wears the flash memory.
Managing gadgets is more closely integrated with Windows Explorer, but the gadgets themselves continue to operate in a separate sidebar.exe process. The Desktop context menu includes a new "Gadgets" menu option to access the gadget gallery, and a "View" sub-menu option to show or hide gadgets. Hiding gadgets results in the sidebar.exe process being unloaded, which Microsoft says is a power-saving practice. Unlike Windows Vista, all gadgets run in a single process, which saves memory, and the process is not run at all if the user has no gadgets on the desktop. Gadgets can be brought to the foreground on top of active applications by pressing Win+G.
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