It's unclear whether the $10 subscription will let you watch an unlimited number of episodes from the site, and if advertising would still be displayed on the back catalogue episodes. The move to a subscription model isn't at all unexpected, but they'll probably have to offer something more than five-week old episodes for this to catch on. If you're able to stay on top of your favorite shows in a timely manner then you don't really need to sign up.
There are also rumors that Hulu might tie its subscription service with a new iPad application, but as Peter Kafka at MediaMemo notes their subscription aspirations could be significantly devalued by a free streaming video application from ABC already available on the App Store.
Downloads and Drivers
From the Forums
Subscribe to TechSpot
Get free exclusive content, learn about new features and breaking tech news.