Not sure if it's been posted but I just got this email from Sony:
Hi Private Beta Testers,
We just wanted to give you all a quick update on the next phases of PlayStation Now. As you may have heard, at our E3 Press Conference we announced that PlayStation Now will be moving into an Open Beta, first starting on PS4 system on July 31, 2014. We are excited to get PlayStation Now in the hands of all PS4 users - so there is a lot of excitement for July 31 to come around. If you didn't see our E3 trailer - take a look at it here.
Now it's time for Private Beta news. On 6/18 you will have seen a title rotation which includes a fresh set of games as well as the introduction of a preliminary pricing test.
Inside this first test, you will find a variety of rental prices and rental periods to choose from. These prices are ultimately decided on by the participating developers and publishers. Your feedback during this next phase of the Private Beta is extremely important, as we will be monitoring it closely.
PS. If you have a rental period in progress for a game that just got rotated out: don't worry! You will still be able to access the rental up until the end of its rental duration by finding the game in your "My Games" section.
Please give us your feedback in these Private Beta Forums or email us at email@example.com and help shape the future of PlayStation Now
The PlayStation Now Team
Bolded should be of interest to the thread. Keep that feedback coming, I guess!