The APB-Reloaded Website announces May 18 as the launch date for formal open beta testing of the upcoming resurrection of the APB: All Points Bulletin, the online sandbox shooter. That said, they also announce that most everyone interested in being a tester will probably be offered access to the beta before then:

However, between now and the Open Beta date (ie for the next two weeks), we will progressively permit access to MOST PEOPLE (17 or older in the US and 18 or older in the rest of the world) who do two things (1) creates (or already has) a GamersFirst Account with the appropriate info (see the link to the right of the blog) and then (2) submits his/her email (matching the G1 account) at the front of the APB page (www.gamersfirst.com/apb) in the "Newsletter Signup Email form." This will let us slowly turn up "the heat" on our servers before going fully "open."