I've seen a couple reports of it. Not a hoax as far as I can tell. The reason it wasn't noticed before, is because it is such a small effect (thus the affect on radiocarbon dating is also small). It is just now that the detectors are good enough that it has been noticed. Also the solar activity minimum allowed for a prolonged period of time in which to make these observations.

Pioneer PDP-5020FD, Marantz SR6011
Axiom M5HP, VP160HP, QS8
Sony PS4, surround backs
-Chris