Would APPLE go to all this trouble trying to retrieve a missing "Iphone 5" if it's nothing more than an upgraded Iphone 4(S)? I don't think so.
We'll probably see two distinctly different phones presented on Tuesday...
Yes they would....
No we won't.
Spec upgrade to 4S now, iPhone 5 next year-- just like Apple has always done.
2 years between design changes, 1 year between spec changes.