Image Source: Heroes Producer Jesse Alexander's Flickr account
WARNING: Spoilers ahead!!
This is a recent set photo from Heroes Season 3. The image is in reference to one of the new villains named Samedi, little is known of him yet.
According to Debbie at Watching Heroes, here is a translation of the image:
Mort Aux Imperialistes (on the poster) : It means something along the lines of death to the Imperialists.
Samedi L'egalite Davinity (graffiti on wall) : These words apparently translate to "equality".
Source: The ODI
Also, check out this entertaining video of Kristen Bell on Jay Leno's Tonight Show. They showed a clip taken from Heroes Season 3, where Elle claims she can catch Sylar.
Finally, click here to view another NBC promo video of Season 3 and the premiere. In it, Sylar and HRG are in a car and Sylar says "Aren't you curious to see how it all plays out?"
So enjoy these videos and stay tuned for Heroes next Monday!