Halo: The Master Chief Collection's release on PC continues, with developer 343 Industries expanding the testing phase for Halo 2 and Halo 2: Anniversary. The developer announced on Twitter that "Ring 1" testing has begun, meaning even more people are now being allowed in to the test, but it's unlikely you'll get in right away.

Ring 1 includes "external partners" that work with 343 Industries. This ring comprises people from across the world who give feedback to the studio, but it's not exactly clear who these people might be. If there are any major issues reported, the developer may decide to bring the game back to Ring 0 (which is for internal studio developers). If it all goes well, the beta--or "flight" in the Halo vernacular--will move on to Ring 2, which includes even more external partners. Ring 3, meanwhile, includes members of the public who have joined the free Halo Insider program. A full explanation of the Ring system is available on the Halo website.

This timing is right on schedule, as 343 previously said it was hoping to launch this Halo 2 flighting phase at the end of March.