Halo: The Master Chief Collection's testing is expected to Begin soon!

PC Gamer reports that as earlist as next week 342 Industries will be starting it's first PC test for Registrered Halo Insiders.
Though not all Halo insders will have access this first go round

"We're starting more modestly because we've got quite a few levers to pull and we want to ensure our delivery pipeline runs smoothly, our communications are clear, and that participants can properly provide their feedback on the build," said 343's John Junyszek. 

The test is closed but 343 promises that the details will be shared with everyone. 

 You can also sign up to the Halo Insider Program here and get opportunities to test all of the MCC games when they're available.