Rumours were running rampant yesterday but according to 343 Industries Studio Head Bonnie Ross, the multiplayer beta for Halo 5: Guardians will begin on December 27.
The beta is set to run for 3 weeks but who knows as Beta start and end times always seem to adjust on the fly.
As previously announced, if you purchase Halo: The Master Chief Edition (set to release November 11) you will get access to the beta.
Halo 5: Guardians will release 2015 on Xbox One.