Sorry about the v1 upgrade experience. Sadly, it's hard to predict how long it takes the App Store CDN to propagate. A few years ago we had a launch that took 11 hours(!) before people started seeing it. Luckily we did not hit that snag this time, so hopefully you'll see it in the next few hours.
The free upgrade worked for me, but trying to sort out how to actually go back and pay (app + new stuff looked good, no reason not to pay for it) and I have to say, figuring out how to do that (and how to get back to the settings in general) was more than $10 worth of frustration.
By my calculations, you now owe me $2.71828 and I was trying to give you money!