Qt 5.7.1 has been released today. It contains all the latest bug fixes and improvements, including everything from Qt 5.6.2 patch release as well as additional improvements and functionality not available in the Qt 5.6 branch.
The brand new Qt Creator 4.2.0 is also included in the Qt 5.7.1 offline installer packages as well as the online installer.
If you are using the online installer, Qt 5.7.1 and Qt Creator 4.2.0 can be updated using the maintenance tool. Offline packages are available for commercial users in the Qt Account portal and at the qt.io Download page for open-source users.