Yes, they are still having it.
I contacted UNR, The Brookings institute and RP HQ.
After getting the run around from them UNR, Brookings said that the event was formally "ON" but that none of the invited candidates responded to the invite.
So they will have the event without the candidates and have invited special speakers instead.
As UtahApocalypse stated in another thread...the three other candidates were frightened of losing ground to Dr. Paul so opted for the coward’s way out. Had they accepted the invite Dr. Paul would have been there as well.
These traitors certainly have no problem with a FOX news debate where THEY (the 'top tier' candidates) will get all the questions they need to attempt to catapult themselves with 30 second sound bites that make them look like heroes...but a four man forum where broader, lengthier and full blown answers by ALL four attendants televised nationally by ABC would be catastrophic for Rudy, Mittens and McCain against the likes of Dr. Paul.