2008 is the last year Polaroid will keep making film. You should be able to get through early 2009 until the stock runs out, but there's likely to be a rush on what's left by instant photo enthusiasts.
I never was into Polaroids, but I think they're cool, and certainly they've become a part of pop culture. I've heard of fashion photographers using Polaroid backs on their Hasselblad cameras, checking exposure before a shoot.
Digital has killed any hopes Polaroid once had to continue as a viable film camera company; one instant medium has been supplanted by another. RIP, Polaroid pictures. Keep on refining your PoGo printer, it looks like a promising little niche product.