Current text

Supported Architectures and VxWorks Releases
Qt 5.5 is currently tested and supported on VxWorks 7 release SR0480 2016-09-16. Supported architecture is ARM-v7.

If you are interested in later Qt releases, please contact Qt professional services.

Qt for VxWorks Source Package
Qt for VxWorks is delivered via the Qt Account, under the name Qt 5.5.1 > Qt VxWorks Platform Source Package.

Required new and updated text

Supported Architectures and VxWorks Releases
Qt 5.5 was verified on VxWorks 7 release SR0480 2016-09-16. Supported architecture is ARM-v7. Note that Qt 5.5 is no longer supported.
Qt 5.9 LTS was verified on VxWorks 7 SR0541. Note that Qt 5.9 is no longer supported from May 2020 onwards.
Qt 5.12 LTS is verified on VxWorks 7 SR0541. Qt 5.12 is supported until December 2021.

If you are interested in other Qt releases, VxWorks versions or target hardware, please contact Qt professional services.

Qt for VxWorks Source Package
Qt for VxWorks is delivered via the Qt Account, under the name Qt 5.5.1 > Qt VxWorks Platform Source Package. Note that Qt 5.5 is no longer supported.
Source packages for up-to-date and supported Qt releases on VxWorks are available through Qt Professional Services.

While at it double check...

While at it double check that also other parts of the documentation under https://doc.qt.io/qt-5/vxworks.html is up-to-date, like e.g. the list of add-on's.