Other then Kermit's head looking rather small in proportion to his body, these plush dolls look very well done and much better then the prototypes we saw back at the 2014 Toy Fair:
They are also available directly through Madame Alexander's website, where you can get discounts if you sign up for their newsletter.
We've gotten our dolls. Piggy and Fozzie look identical to the hero shots above and Kermit's head is much better then expected.
Animal, however has the biggest issues. You really have to work his fur to get him to look right, his eyes aren't placed correctly, and his mouth wants to stay wide open.
It is still MUCH better then the original prototype and it may be a case where you can one in better condition on the shelf.