DavidMerrick said:

Also please keep in mind that the name "Snoke" did not show up once in that summary based on the established rumours, which confirms my theory that they're taken from an earlier draft. To put that in perspective, if we were discussing rumours about the original Star Wars from an early draft leak we'd be talking about the "Legion of Lettow."

The character certainly appeared ("Uber"), but perhaps the name was never reported, as he's called "Supreme Overlord" throughout the script and "Snoke" is the sort of detail that gets mentioned in photo captions