It appears that some folks on the official Skyrim forum have been snooping around and may have uncovered some information on what’s to be included in the upcoming The Elder Scrolls V: Skyrim DLC. 
 
Evidently, there is a folder in Skyrim update 1.5.26 called “DLC01.” Within this folder are assets for new Snow Elf characters, a Snow Elf Princess, crossbows and new vampire animations such as feeding and hypnosis.
 
Either way, Bethesda has been very secretive regarding their upcoming DLC. VP of PR and Marketing at Bethesda Pete Hines has mentioned that he will work on getting more info out ASAP. I suppose we’ll soon see if there is any merit to these leaks!
 
SOURCE | SKYRIM FORUM