I was on the phone with a 1K agent and asked her the same question. She told me that the ability to use a UA SWU on CO might happen as early as the next week or two. She said that they "are already in training" about how to use the new system. Her information seemed credible to me, although I would always add a few more weeks just to be safe.

UA will lose a lot of credibility if they do not have it in place "this summer" as they advertised. So I doubt that we will have to wait until next year.