Grays Probow Stock Sold Out? New Range Release Dates?

I've been looking to buy a Grays GX7000 Probow both online and in shops but every shop I've tried to buy from or contacted to ask about it (including Grays themselves) have said they're out of them and other Probow sticks by Grays like the GX8000 or GX11000. (Even trying to order one from the Netherlands had the same result!). The only one I can find is the AJ7 version but I'd prefer a stick with higher carbon content as that's what I'm used to playing with.
So I was wondering whether other...

Grays Probow Stock Sold Out? New Range Release Dates?