January 11, 2016
Qt Events
Qt 5.6 status: some build issues are required to be fixed before an RC can be released.
Qt 5.7 status: branching and feature freeze will be delayed at least a week.
There are no current plans to release a Qt 5.5.2.
Rene J.V. Berlin has posted an RFC - QProcess variant or separate class for launching applications GUI style.