Is Possible To Make Assets 'Downloadable'?

My game has an online feature, and as part of that online feature, I would like to be able to introduce new items in the game without having to have a user update the app through itunes. The only thing necessary for a new item, would just be to be able to download a new texture icon. However, I’m uncertain if this is currently possible, or if their are any limitations. Has anyone tried this?

(Specifically, I’m developing for iOS)

shameless bump

As an in app update? Sure I don’t see why not and is a feature that goes back to Unreal Tournament and Quake 3.

Yeah without going through the App Store and redownloading the whole app. Just want to be able to push new assets occasionally