Tabs Index, What happened to ui.index

Tabs Index, What happened to ui.index

I just upgraded to the latest Tabs UI.  Now I get the old tab, new tab, new panel, etc for the activate event.  Anyone know how I can get the index of the tab just activated.  I examined the objects I'm getting in the debugger and I don't see index anywhere, It looks like I'm getting back JQuery objects.  I would think the tab index would be prominent and easily accesible, as it was beofre