Silverlight + DLR + "VBx" = ....

... a replacement for VBA in MacOffice?

What the heck is "VBx"?
Microsoft Sliverlight

Given that Silverlight and the DLR and a whole host of other acronyms and technologies that seem to be gushing forth from Microsoft at the moment are cross-platform, does this mean there's a good chance it's an inroad for .net to go live as a coding framework for MacOffice? As I've not seen anything anywhere suggesting that, I think it's unlikely - but I'd be surprised if someone inside Microsoft isn't at least thinking about it!