It would be like navbar but separately stylable (by default black) and one that can be placed into a footer. Like navbar it could hold buttons, only title would be omitted
The toolbar widget is adaptable on mobile, despite not behaving as a native toolbar on iOS and WP8.
I don't believe this is completed as the request was specifically for mobile. The toolbar delivered is for the desktop environment or at least I don't see a mobile demo of it being used like an ios toolstrip or wp appbar type treatment.
Implemented via toolbar widget available in Q2 2014: http://demos.telerik.com/kendo-ui/toolbar/index
Yes the current tabstrip treatment on Windows Phone is styled like a toolbar (eg meant for commands not navigation). There should be an ios7 equivalent for the footer.