[PyQt] QtConcurrent support?

[iMath]

In these 2 posts
http://nathanhorne.com/?p=353
http://www.riverbankcomputing.com/pipermail/pyqt/2011-January/028961.html


says 
"when the threaded code is calling long running c/c++ functions, such as a database select, it will release the GIL until the call completes.  This is all done automatically within python and PyQt.  This is “real” multithreading."


if he is right(QThread is "real" multithreading in Python),then why not add QtConcurrent to PyQt ?
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