Gun sequel announced via poster in THPG demo?

In what could be considered the weirdest game announcement ever, Joystiq has discovered that there is a Gun sequel poster hidden inside the newly available Tony Hawk's Proving Grounddemo. The poster, as seen in the screenshot above, depicts what looks to be a Gun sequel called Gun: Magruder's Ghost featuring the cliche tag line "Even from beyond the grave". So, we're left wondering if this is a real Gun sequel announcement or if those artists over at Activision like messing with our heads and find it to be a funny easter egg joke. We find it a little odd but plausible that Gun: Magruder's Ghost would be announced this way, so we'll leave it up to you to make the call to what this all means.

And if you're one of those fanboys who doesn't believe picture evidence, instead needing to experience it for yourself, then this is how you find the poster. Simply fire up your newly downloaded THPG demo, head down the beginning hill until you spot a large staircase on your left. You'll be able to see the poster on top of said staircase.