While the previous two releases contained some episodes where Muppet Wiki had tracked down Noggin edits, this will be the first Old School release where we don't know what Noggin edited at all. Who knows, maybe Noggin edited out rare characters like Aristotle or Deena and Pearl (after all, Noggin did edit some street scenes).
The season 11 premiere includes a rendition of Happy Birthday. I'll be surprised if that's not edited. I wonder if it can easily be edited out (they very well could put a short replacement insert in it's spot if it would otherwise look like a weird edit). If anything else in these episodes needs to be edited for any reason and they add in segments then I hope the replacement skits include rare characters from this period (if they're not in the bonus clips). Looking over the episodes at Muppet Wiki over and over in the past three days, it seems a lot of rare characters don't appear in these episodes. We do get Michael Earl's Forgetful Jones, but not his Snuffy, and no Dr. Nobel Price, Shivers the Penguin, Bruno the Trashman, Deena and Pearl, Biff and Sully, Countess, Ferlinghetti Donnizetti, Leslie Mostly, or Aristotle. I won't be surprised if we don't get all of these characters, but it would be disapointing if none of them appear on this set at all.