Well I looked over the AICN article again and I think it's all just a fan who submitted a rehash of the genuine scoops from Stax and the report about Byrne from the daily mail and threw in the whole "no Le Chiffre" thing as a way to stir up contraversy in the fan community. This person acts like he has the inside scoop and knows more than most. I think the way we will no for certain is if it this person does know more than the daily mail and Stax is if we do get and official confirmation today that Byrne is indeed Vesper which is what this "scooper" claims to confirm. If this does indeed happen I'll buy it for now, if not, than no use getting worked up over "no Le Chiffre" until we hear otherwise from EON/Sony.
Could be or as Mr.* says elsewhere they may have gotten one part wrong or it may have gotten pushed back. Who knows? We'll find out when they do announce the cast if this is correct--then we will DEFINITIVELY know if Le Chiffre is in the cast or not.