Is there a control for creating a floating tab well similiar to VS2012?
VS11 doesn't do that but if that's what you want then you would have to set the UseOwnedFloatingWindows to false - this was added in 11.1. The OS forces all owned windows to be minimized/hidden when the owner is minimized. This will also mean you will lose the other implications of owned windows - e.g. the floating windows may go behind the owner window.
I understand how to allow dragging of panes to another monitor, we are already doing that. What I need is that floating pane to stay visisble when the main app is minimized. Current all floating panes will minimize when the main does.
"floating tab well" is described here as "Now you can dock floating document windows on a separate monitor just like tool windows! There’s also an option now which allows you to open documents as floating by default." With xamDockManager you were always able to drag a pane from within the DocumentContentHost into a floating position (at which point it was DockableFloating so other things could be docked with it).
Maybe you're referring to one of the other features relating to where the tabs are located in which case you would need to retemplate the TabGroupPanel and create your own custom Panel that would provide the desired positioning logic.