As a die-hard Muppet fan who grew up watching Sesame Street (and who may or may not happen to have friends at Sesame Workshop), I've been keeping a close eye on this Abby segment for a while.
I have to jump in and make a comment — That is NOT what Abby will look like in the new segment. That is a frame from one of the tests done by Magnetic Dreams during the original bidding phase of the Abby job, but MD didn't get the contract. The show was actually awarded to SpeakeasyFX (just Google SpeakeasyFX Sesame Street).
The show looks nothing like that now. I'm not really a big fan of the "CGI yay!" mentality (Sid the Science Kid freaks me out more than a little), but this show's not looking half-bad. After much debating I've got to grudgingly admit that going CGI does open up some avenues that are closed to traditional Muppets, and the people working on it have, IMO, done a pretty good job of keeping the spirit of the Sesame Street alive.
Should be interesting to see how it fares once it hits the air.
Just my 2 cents.