...at least for XBox 360. Players have been waiting in anticipation for months for the announcement of a public beta coming to CoD5.

PC users are told that their beta is coming soon, but as of yet, there's no date. Closed Keys will initially be handed out to CoD "VIP" Members, then on to registered accounts, based on their time of registration. Another way of guaranteeing your participation is to pre-order CoD5, although rumours are flying that this only guarantees your spot if you're in the US. No word on whether or not this is true yet.

More information can be read here