When Hulu Plus launches later this month the service will not require PlayStation Plus subscription, as previously thought. Hulu has gone on record and stated that “the PlayStation Plus service is only a requirement during the preview period.” Once the preview period is over, the service will be available to all PS3 users, regardless of subscription status.
“With the launch of Hulu Plus there have been many rumors started and we are trying our best to remedy the situation. Specifically to your question, the PlayStation Plus service is only a requirement during the preview period. Once the preview period ends you should be able to download the Hulu Plus app but that will still require the Hulu Plus subscription. Right now we are limiting the number of users but Hulu Plus will be launching to the public very soon so stay tuned!”