I just passed by the quickoffice.com homepage and check out what I have found: Quickoffice - Support Center

Seems that Quickoffice is developing a full version (like on all other devices) and they want our input. So surf by and leave your requirements, hopefully they are implemented.

I also assume that HP will cover the costs and sponsor the updates, as I did not found any Quickoffice download in the app store (like on Androind, where you can download the free version and buy the full version)