Will everyone be forced to use ios 7 for iphone?

I hate the ios 7.

Its just because its new, once you use it a few weeks you won't like the old.

IOS 7 is definitely better ftr.

To answer, no you will not be forced. You will be told of the update but updating to it is entirely up to you.

No. Apple would never force updates on others. There's still a few old Apple users with dropped iOS support and are still running older iOS versions!