Is there a person or group working on a jQuery Mobile Theme to match the iOS 7 look/feel?  From what I've seen, it has a number of changes in buttons and icons, but not a complete upheaval of everything.

1. Full new set of default icons
2. UIFont.preferredFontForTextStyle to drive dynamic font sizing (Dynamic Type) - may be hard to get access to this property without a Cordova-style hook.
3. Blurred under-window transparencies may be hard with CSS only, my guess is transparent:yes, blurred:no.

What else is a major challenge to implementing an iOS 7 native look and feel?