Back in January we were impressed by just how well Sony's PlayStation Now game-streaming service worked, and the chance to test it out yourself could be coming rather soon. The closed beta program is making its way to the PlayStation 4 on May 20th (tomorrow!), according to the PS Blog, invites for new testers will be making their way select inboxes shortly. What's more, the outfit also says that it's opening the service's PS3 beta to more users as well. If you haven't thrown your last-gen console out just yet, this might be another reason to keep it around for a bit longer.