What probably matters to youSection of the release
What
Managed settings are settings an administrator sets for everyone in an organisation, which users cannot override. The list of what they accept has grown:
A new group of settings called Built-in browser.
requireFullVmSandbox now accepts executionTarget: 'desktop'. A sandbox is a walled-off environment that limits what commands can touch, and a full VM sandbox runs them inside a separate virtual machine.
Settings documents now recognise two descriptive keys, $schemaVersion and $schema, which say which version of the settings format a document follows.
Why
These mostly affect administrators who manage the desktop app. They give policy files more to control and a standard way to say which settings format they are written for.