As most of you are aware, the public multiplayer beta for Halo Reach on the Xbox 360 kicks off today. We have a recap of the estimated time that the beta will be available to download – according to Major Nelson.As reported from TheHDRoom, you’ll need the Halo 3: ODST disc if you want to take part in the beta, unless you have obtained a code elsewhere. Full details on how to obtain your code via ODST can be seen in our previous article here.