Bad news peeps.
We did the switcheroo and our account showed both myself and my son eligible for upgrade. Then I signed in tonight and not only are we back to not being eligible but my husband, who has an iPhone and is eligible, now shows not eligible and our account shows no data plan for anyone, including him.
Now I fear I will not be able to even get ONE at the discounted rate.
BAH.
Just wait and check it tomorrow. At night (crazy, I know) it seems to show everyone "not able to do this feature at this time." It did it for me last night, too... but I'm hopeful it will be back to the same in the morning. Hopeful, at least.