And even checking the comments at Eurogamer:
-A person claiming to work at play.com saying that only MH3 is on the site and the others were fake and made by someone else
-Another person saying that play.com had MH3 listed for months
-Other people that also saw the 4chan post
-One guy that said that he posted the image over there, and Eurogamer grabbed it as "news"
And Joystiq still grabbed the news and cited Eurogamer as "the source".
It would be nice it all were real, and MH in some way is expected..but, some need to tone it down. Heck, where's the "Amazon outed Kid Icarus for Wii U" news?