Qt 5.8 Alpha has been released. As is usual for Alpha, the release is in source code form only.
http://blog.qt.io/blog/2016/09/05/qt-5-8-alpha-released/
Qt 5.6.2 snapshots are available:
http://download.qt.io/snapshots/qt/5.6/5.6.2/
Some session notes from QtCon Summit can be viewed here:
https://wiki.qt.io/Qt_contributors_summit_2016
Posted by Jon Trulson