The Firefox Superbar is about to be kicked to the next level with the integration of Ubiquity. Right now all that is available from Mozilla is the Taskfox Prototype, an illustration of what Ubiquity blended into Firefox's fabric would look like to the end user.“The main thing we haven’t prototyped is the interaction of the awesome bar results and the Taskfox commands. We know that this is a major remaining question so we’ll be prototyping that soon. We’ve more or less ignored that interaction for this prototype,” revealed Aza Raskin.

More info: Taskfox Prototype | Ubiquity for Firefox