Is there any indicationthat the next generation A4 Cabriolet will continue to be an A4, or will it be based on the A5 (seems more logical?)

I'm a big fan of the current car but they hold their value so well here, I'm tempted to just go for a new one and order it exactly the way I want it, and know that I'll keep it for ages.

Just wondering when we'll start to see more information on it...