Built in support for ios7

Does anyone know when we are going to get built in support to build to iOS7/7.1?

Everytime I build (even with append) I always have to go back and change a load of project settings/assets. It’s quite annoying when you think you’ve finished but then end up trying to fix a problem and Unity overwrites stuff

It is coming with Unity 4.5.

P.S. why do you need to change it so often (not only the final builds)?