The Qt Company's Jani Heikkinen announced the availability this morning of the final Qt 5.6.0 packages. The availability of these packages today is for any last minute testing to see if the Qt 5.6.0 release can be officially announced on Wednesday if there are no last minute issues.
These expected final Qt 5.6.0 packages can be found via this mailing list message. Qt 5.6 features fully rewritten HiDPI support, full Windows 10 support, the removal of WebKit and Qt Quick 1 support, and many other changes.
Qt 5.6 is running far behind schedule with originally the Qt 5.6.0 release was supposed to be released more than three months ago on 8 December. Due to the rough time getting Qt 5.6 out the door, the Qt 5.7 release has been moving on concurrently and is already in an alpha state. Qt 5.7 is planned for release already at the end of May.