Qt for Python 6.12 is here, alongside the Qt 6.12 LTS release. This is the biggest release we have had in a while. If you haven't read what's new in Qt itself, check out the general announcement .

Three things stand out:

Reactive properties for QML: The new QtQmlFeatures module removes most of the signal-and-property boilerplate from your Python classes.

PySide6 on iOS : The long-awaited iOS support is here.

A security review of our tooling, motivated by the EU Cyber Resilience Act (CRA): We threat-modeled Qt for Python, fixed the issues we found, and added security markers to our source files.

Python 3.15 Initial support based on one of the previous RC and free-threading Python is still in research.

Additionally, this release also contains an extensive list of fixes across Qt for Python.

QtQmlFeatures: reactive properties for Python (Technical Preview)

Exposing a Python value to QML takes more code than it should.…