I am ready to make the upgrade from my old POD xt pro (which I love) to a new HD pro. I see that Guitar Center does not have any on-line or in my local store. Is there something I should know?

Is there a new model coming, or update I should be aware of? Is it just a Guitar Center thing? Just seeing if anybody knows anything. I do not mind waiting a little longer if a new model is just around the corner.

Thanks