The exact date has not yet been released, but Cryptic Studios plans to release the next wave of beta invites this week. The date will be no later then March 31st, however it could be as early as today. We'll do our best to keep you informed as to when the next wave of invites are sent (Cryptic will post it on their City of Heroes website). If you don't get a pre-order invite with the next wave of invites remember you are guaranteed into beta by April 7th!
To read the official article, click here: http://www.coh.com/news/item203.html