I had the same issue. And then when I tried to complete the pre-order of course it gave me the 9/26 date. So I ended up ordering the blue 256 GB, that showed 9–26, because the color really doesn’t matter to me anyway as long as it’s not the Halloween orange. So I said, screw it and then I would get the blue one and deal with the wait. And of course, later on in the day that blue one got pushed to the 19th, happy, happy joy, joy. So my screen still showed what you showed, so I went in there and canceled my silver pre-pre-order, and I will get my blue phone on the 19th still.I did pre-orders, too, every year up until 2019 (seasonal at Apple that year so I just picked it up in-store) and there is a weird new glitch every year. I got the 9/25 delivery date this year and chose in-store because I had blocked off Friday but didn't want it to be a mystery day the week after. This is the glitch a friend and I are experiencing now -- we already ordered but keep getting reminders from the app to complete the pre-order haha.
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Long story short, don’t worry about that pre-pre-order information, it will fall off in a few days anyway, and it doesn’t have anything to do with the phone that you actually did complete the order on. Hope that helps.