Do new iPhone 4 come with iOS7?

I'm getting an iPhone 4 next month, will it come with iOS7 and if it does is there a way i can get back to iOS6?

It depends if you get one that has been on the shelf for 4 months or one that is newer. Most likely you will have IOS7 on it and if it has IOS7 on it you can't downgrade to IOS6.

Apple discontinued the 4 when the 5s & c were announced so it depends on what version of iOS the person you are buying it from has running on it at the time & no you can't downgrade.