With United, anything is possible. You might even get a 727, 757, 777, or even a Convair 440.
If I were you, flying United, I'd be content if 1. You actually flew in the same month you were scheduled, and 2. if your plane actually lands in DEN.
I wouldn't put anything past UAL-including transporting you to COS, SLC, or even BKK.
You just never know.
Good luck to you.