We first noticed it while watching the special features disc. I had the World of the Hunger Games highlighted, and for whatever reason pressed down on the key pad. Very strangely this appeared:
Fast forward to 20 replays later (that section of the Blu-Ray, unfortunately, is not pauseable), I circled every letter to the corresponding word according to what color they were attached to in the first two messages. The response gave me chills:
"Beware of the Quarter Quell. District 13 survives. All is not lost."