According to a poster at NeoGAF, ZeniMax has applied for three new trademarks, likely connected with upcoming Fallout: New Vegas add-ons. Two of them, Honest Hearts and Lonesome Road, were already hinted at in the in-game graffiti. The trademarks are:

We'll let you know when we know more about these add-ons!

Twitter logo Facebook button YouTube button 
Community content is available under CC-BY-SA unless otherwise noted.