[Announce] Qt 5.9.0 Alpha released

[List for announcements regarding Qt releases and development]

Hi,

I am happy to inform that Qt 5.9.0 Alpha release is out, see http://blog.qt.io/blog/2017/02/23/qt-5-9-alpha-released/

And a bit earlier than planned! Big thanks to everyone involved. 

br,
Jani Heikkinen
Release Manager