It is possible that since F4A filed for bankrupcy Palisades was able to buy the license from them. It's been months since that could have happened. Lines like ZIM and Fairly Odd Parents were annouced like 6 months before production even started, so it's very possible that the Sesame line is being annmouced soon with a tentative release date around spring or summer time.
It is also possible that Palisades got a specialty license for Sesame figures that can only be sold in places like Media Play stores and online stores. They did that with Fairly Odd Parents so they could have done it for Sesame Street. Muppets are only at specialty stores now and with series 9 they will only be online, so they may just start that way with Sesame Street.
You never know. I'm hoping one of the lines is Sesame Street. Imagine a Big Bird figure that is 11 inches tall. How cool would that be? And unlike Sweetums, EVERYONE would want to sell that figure.