Is there a Signature verion of the Vandersteen 1C?

I once heard, or read, something about an upgrade to the 1C that was like the Signature versions of the 2 and 3...any truth in this?
I've never heard of anything like that. If it was true, though, I would be interested.
As far as I know, there is no Signature version of the 1C, nor is there any plan to offer one. Since the 1C is the entry-level Vandy model, it doesn't make a lot of sense to offer a Signature version since it would increase the cost to about the level of the basic 2Ce.