Realtime Worlds has posted a note on its official APB site that it is currently looking for beta testers for the highly anticipated upcoming game.
Thank you for your interest in APB: All Points Bulletin Beta Program! We'll be selecting beta testers who complete the application process and meet our criteria. Selected testers will receive an invitation by email along with details of how to download the game and take part. If you don't hear back from us in the next few months, don't despair, we'll be selecting more people right through to launch and we will need bigger numbers of testers as time goes on. Even if you're not selected for the start of the program you may get an invitation later.
The application process asks some optional demographic questions (age, sex, marital status, education, etc) as well as some very specific questions about PC hardware including a request for your DxDiag.txt file.
Also, be aware that answering the question "why do you want to be a beta tester for APB?" requires a response, and you only have 250 words to say something smart.