I read it on the internet, it must be true... :-)
A few hundred people with the phone on XDA, and 15 get it... You would think at least one other forum member somewhere other than XDA would have received it. But nobody on the two forums I am on daily received it, unless they rooted and got it from the links at XDA. Nor have I heard any claims about the earlier drop that didn't reference XDA.
I don't know why someone would fake a release, but if it walks like a duck, and quacks like a duck, it just might be a duck.