The most notable change this week is the introduction of a new ALT+TAB interface.
It’s another A/B test, meaning some testers may not get this new UI just yet. The new UI is a “windowed” version of the ALT+TAB experience, which is currently a full screen endeavour.
Microsoft says the new UI is an experiment, meaning it may not ship, and that feedback from Insiders will be key to whether or not it stays.