My local jaguar dealer called me today to follow up on my decision to pick up the Xjl sc. She was working out the numbers based on the 2013 pricing and she mentioned to me today that the new 2013s come with a smaller Key fob and she also informed me based on her own knowledge the keys are not backwards compatible so if i decide to pick up one of their 2012 models I will be stuck with the massive key. She said she currently doesn't have an image of said key. So I am hoping someone here may be able to confirm or deny the backwards compatibility as well as get a pic of the compact key.