That is weird.There seems to be a size difference in 7.1.1. Its seems to take less space.
I shall also ask what was wrong, as I've used WiFi hotspot just fine on 7.1. In fact I relied on it extensively on my last trip, which nearly pushed me over my data plan for the month.WiFi hotspot is finally fixed.
Definitely nice to finally see something like that become available.'In-App Purchase' is now displayed in small writing under the price of an app in the App Store.