A glimpse of what's to come
We have a better idea at how PlayStation Now will exactly work thanks to an error that appeared on the PlayStation Store. PSNStores noticed they were able to rent Catherine, with a 1 day, 7 day, and 30 day options available. When they checked their transaction history, PSNStores noted the entry was listed as "Catherine PSNow."
PlayStation Now will be rolling out this summer, and the service will let you stream PS1, PS2, and PS3 games over the internet to PS3, PS4, PS Vita, tablets, smartphones, and televisions direct.