It's the whole OS.What I am wondering is if you are still on iOS6 on your iphone 5 and you decide to update your software, do you just get the 7.0.6 update only or does it try to actually install the entire iOS7?
I ask because I'm still on iOS6 on iPhone 5 and it says I have only 1 update 7.0.6 the details below that say it's a fix for the SSL problem and the size is 1.2 GB. So maybe Apple is allowing iOS6 owners to just download this software and not the entire iOS7. We know the full iOS7 update is over 3 GB so maybe we can just update the SSL fix without having to install the entire iOS7.
Anyone try it?