Reportedly, Pittsburgh mayor, Luke Ravenstahlk, and Pennsylvania govenor, Tom Corbett, will be present, as well.
Word comes from twitter via John Delano, a Pittsburgh political analyst for CBS Affiliate KDKA-TV.
Update: The press conference will be held at noon. Pittsburgh has also put the Bat Signal on their Downtown Highmark building. Info via the Pittsburgh Post-Gazette.
Update #2: A local investigative reporter for the Pittsburgh Tribune-Review, Andrew Conte, was on hand and tweeted live from the event:
The Dark Knight Rises hits theaters July 20th, 2012 and is directed by Christopher Nolan starring Christan Bale as Batman, Tom Hardy as Bane, Anne Hathaway as Selina Kyle/Catwoman, Gary Oldman as Commissioner Gordon, Morgan Freeman as Lucius Fox, Michael Cain as Alfred, Juno Temple and Josh Pence as a young Ra's al Ghul.
Head on over to the Cosmic Book News The Dark Knight Rises Movie Hub for even more news.