Pricing for 3D movies is higher than for standard films, but not by much.  An HD movie rental costs $4.99 on Vudu, and a 3D movie rental at 720p costs $5.99.  If you step up to 1080p you'll need to pay $6.99. Purchases are pricier too, at $21.99 instead of $19.99.

Only three 3D movies - 'Bolt,' 'Chicken Little,' and 'Meet the Robinsons' - are currently available on Vudu, but more will be added in the future.

The 3D update for Vudu will be made available to PlayStation 3 owners in the next few weeks and other capable devices will see the change soon, but no date was specified by Vudu.