So for some reason, Opel/Vauxhall have released confirmation of a new convertible to expand the range in 2013. A little odd they would announce that 2 years early without a concept or any indication to what it will look like, but they seem happy to do so.
Here's what someone important at Vauxhall said about it (Opel/Vauxhall CEO Nick Reilly):
“The new Convertible will be a great addition to our product lineup... It follows the long-standing tradition of highly emotional and legendary Opel/Vauxhall Cabrios that provided important halo effects on our brand. With its sleek and elegant design, our new Convertible will fully deliver on that same promise.”