At some point we likely want to drop support for Qt4, to be able to use new Qt5 features without worrying about backwards compatibility.
Not sure when: there is no real hurry. Just wanted to have a issue open for this. This doesn’t have to be 0.14. Although the number of people still testing with Qt4 is likely very low.
The only article I could find on Qt’s EOL policy was: https://blog.qt.io/blog/2014/11/27/qt-4-8-x-support-to-be-extended-for-another-year/ which is pretty old.