PC and PlayStation 3 gamers will have to wait to jump into the Call of Duty: Elite beta, Activision has said.
The social network and stat tracking service is already live for Xbox 360 owners.
PS3 gamers get Elite "this summer". PC gamers have to wait until the autumn.
The news comes alongside the release of a new Call of Duty: Elite trailer, below, taken from a personal walkthrough from Beachhead studio head Chacko Sonny and Noah Heller, product director.
The first wave of invitations for the Call of Duty: Elite beta went out last week. Those who signed up should check their email inboxes to see if they've made it in.
Access is being granted, for the most part, in order of who signed up first.
Around two million volunteers have reportedly signed up to trial the FPS series' new social networking/stat tracking hub. Activision hopes to include most of them at some stage of the beta.
The beta will use Black Ops data, though obviously Modern Warfare 3 stats will also feature in the final product.
There's no set end date for the trial period as of yet. The full site is scheduled to launch along side Modern Warfare 3 in November.