343's community manager, John Junyszek, has confirmed the "final test" has gone well and the release process is now underway - with invites rolling out to Insiders. Once again, it may "take some time" for your own invite to arrive via email and Waypoint.
If you have got an invite, you should now be able to download the game and access the Insider Support site for install instructions and more information. While weapon drills and training modes are available "all day" matchmaking will be limited to the previously mentioned timed windows:
Keep in mind, there might be some technical issues on 343's end due to the sheer volume of people trying to access the preview - so don't get too worried if you are encountering any problems at the moment.
Have you been invited to participate in the latest Halo Infinite technical preview? Tell us down below.