Windows (squish ide):

Squish for Qt 8.0.0 (Binary for Windows, Qt 6.6.x VS) does not seem to work

Squish for Qt 7.2.1 (Binary for Windows, Qt 6.6.x VS) ** works{}

Squish for Qt 7.2.1 (Binary for Windows, Qt 6.5.x MinGW) works

Squish for Qt 8.0.0 (Binary for Windows, Qt 6.7.x MinGW) works, but need to execute squish through Qt\6.7.x\mingw\lib

Linux (squish ide):

Squish for Qt 7.2.1 (Binary for Linux 64, Qt 6.6.x) works Only with QtWidgets, (QtQuick and QtQml)

Squish for Qt 7.2.1 (Binary for Linux 64, Qt 6.5.x) works Only with QtWidgets, (QtQuick and QtQml)

Squish for Qt 7.2.1 (Binary for Linux 64, Qt 6.2.x) works Only with QtWidgets, (QtQuick and QtQml)

Squish for Qt 7.2.1 (Binary for Linux 64, Qt 5.15.x) works Only with QtWidgets, (QtQuick and QtQml)
Mac (squish ide):

Not tested.

Windows (squish tool):

Can be built by configuring a 6.8 msvc build over a previously built 6.5.6 msvc build.

Linux (squish tool):

Can be built by configuring 6.5.6  

(Qt 6.7.2 cannot be built using Squish 8.0.0. does not work)

Python wrapper does not seem to be working, required to use Javascript instead.*

Mac (squish tool):

Not tested.

Squish test suites work cross-platform (windows-linux)

Only required to record one mock test to create a valid mapping 

Icon images are not longer being processed correctly in 8.0.0

A ticket has been opened to report this to the squish team