My Source: UA Ops Mgr. at DIA
He has disclosed to me that the plan moving forward is: UA will not purchase more a/c for quite awhile...instead they will decrease turn-around times. This will increase the overall amount of flights/seats available for the airline...it will be akin to having (and I loosely quote) about 36 more a/c flying for the ailrline. When he was saying 36 more a/c, he was refering to 733s/A32X size a/c.
I thought this was interesting news...and an interesting approach by a legacy carrier.