An article on TheVerge.com discussed WWE's future plans for the WWE Network including a tiered system as outlined below with quotes from WWE co-president George Barrios...

Free: This will offer the same free-to-watch videos you’d normally find on WWE.com. Barrios said WWE might also offer timed previews of paid WWE Network content.

Regular: The standard WWE Network experience, combining free content with subscription benefits like live pay-per-views, on-demand streaming, and original programming.

Premium: “We think there’s also an opportunity to super-serve our most passionate Network subscribers with a premium tier that’ll bring together more content for them, more features for them, and also integrating some of our other non-video services like our commerce — potentially integrating something like free shipping, bringing together our digital ticketing efforts in there. It becomes the one place to experience everything WWE.” Barrios didn’t disclose how much WWE might charge for the premium tier.

There are several features for the WWE Network in the works including offline downloads.