The PlayStation Now PS4 private Beta will start tomorrow, Tuesday, May 20.
Director of Marketing, PlayStation Now Peter Jamshidi said,
Up until this point, our Private Beta for PS Now has been available on PlayStation 3 systems. We’re pleased to announce that the Private Beta program is expanding and will make its debut on PlayStation 4 systems on May 20. If you’ve registered for the PS Now Private Beta, keep an eye on your mailbox for a voucher code.
PS Now gives you the freedom to play select PS3 games like you already stream movies, TV, shows, and music – directly to your favorite PS Now compatible devices without any discs or downloads. The first supported devices launching in 2014 are PS4, PS3, select 2014 Bravia TVs, and PlayStation Vita, with more devices down the road.
If you’ve already registered into the PS Now Private Beta, you should start receiving your invite now> If you haven’t, and you wish to be included in upcoming waves, you can register here.
Let us know if you’ve already received your invite.
Source: PlayStation Blog