Qt 5.7 Will Make Use Of Modern C++11 Features
After the recent mailing list discussion and talking with developers at The Qt Company, it's been decided to make Qt 5.6 the long-term release and to still support it under C++98 compilers. Qt 5.6 will be released later this year.
Qt 5.7 will then have a new compiler baseline of GCC 4.7 and Microsoft Visual C++ 2012. Qt developers will be able to take advantage of C++11 features present by GCC 4.7 and VC++ 2012 unconditionally. Qt 5.7 will also drop support for WEC7 while supporting WEC2013 (Windows Embedded Compact).
Besides making use of C++11, Qt developers may look at the Qt 5.7 release at a point at the same time to also remove support for older Android/Linux/Mac versions. Qt stakeholders interested in more details can find them out via this Qt mailing list thread.