They are in the Collector's Club, not on the site. You need to be a member to see them. If you are, go into the "playground" section and then check the "Made In China" archives on the right side bar. From there you have to check out the bits and you'll see them/ If you aren't a member you aren't allowed to see them yet. It's one of those perks for paying the 50 dollars. The sculpts shown were the early wax ones with no articulation cut in yet. They do not currently have a solid place in the line yet, but I would think if Sal can get a place in the line, a main character 2 pack can get a place in the line. Fozzie, Rowlf, Gonzo, and Scooter are yet to be sculpted, but I would assume they are going to be some time in 2005.
If you still want some kind of proof you can simply ask the question in the Ask Palisades Thread in the muppet section, but then the over worked Ken Lilly has another question to ask that is pretty much general knowledge.