Reading else where that CO have freed up a B764 in EWR yet to be decided where it will operate...As of last week United flights operated by CO EWR - Athens have being pulled for summer 2012 schedule.
The airline capacity is the same, it's just being operated from Washington Dulles IAD, at the US end in addtion to the existing EWR.
Will be October before any increase as IAD is daily year round.