The current PyQt5, PyQt3D, PyQtChart, PyQtDataVisualization and PyQtPurchasing snapshots fully support Qt v5.9.0. However as Qt v5.9.0 is known to be buggy I will not be releasing v5.9 until Qt v5.9.1 is released later this month. The snapshots should be prefectly usable and no additional development is planned. Phil