There is no set date. If you purchased the limited edition version of medal of honor the only news EA has given is that you'll receive an invitation to the beta sometime during the 12 months after medal of honors release. Consoles are going to be included.
The rumor is false or else most of my friends on Facebook would be lighting up their blogs for the beta. and MoH box says that the beta invite is good for up to 12 months meaning if they cant get it out within 12 months of the release of MoH it is Void.