We have Zigduinos in stock again! We sent a big package of them off to SeeedStudio yesterday, so they should have them in stock again soon as well. We don't have very many, so they'll probably be gone again, quickly. Luckily, we're only about two and a half weeks out from the availability of the third spin of Zigduinos. The third spin of board will be assembled in the US -- faster, more reliable, better quality, and not all that much more expensive.
The story with 16ch driver shields is not as good -- Digikey just informed us that the availability is pushed back to the end of September. This has been the story since the end of July -- no stock, and no prospect of when IRF is going to make some more stock available.