The Qt SDK from here contains the built 4.7.0, you need to download the sources for 4.7.1 and build it yourself
Or try the new Qt SDK tech preview, here you can find download links for Linux, Windows and MacOs (this contains 4.7.1 for desktop and mobile, also 4.6.3 targeting Symbian can be installed to publish applications on Ovi)
This tech preview is somehow an "unified" Qt SDK with Nokia Qt SDK and you can install the Qt for desktop and for mobile with the same installer.
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