I'm scared of the new iphone software that is coming out?

I'm scared of the 10S 7 that is going to be coming out this fall. The reason why I'm scared is because I nervous that they might delete all of my stuff on my iphone. Why do they come out with a new iPhone anyway, The software looks to confusing to. Has any body heard about this software that apple is coming out with and they are also coming out with a new phone to. But the only thing that I'm really nervous about is that it will remove all of my stuff that I already have on my phone like my apps, my photos, my notes, my contacts, my movies and tv shows I don't want to start all over again and my reminders that I have their to. Does this software only go on the new phones are is all the phones that apples owns. Someone please help with this I'm so confused.

Added (1). I'm very nervous about the new features to. The only thing that I scared of is that sometimes I get this very werid number that is goes right next to my apps and that bothers me. That is an other thing that I'm werid about to.

I did not fully understand you. But do you mean if you upgrade will it erase everything? Well I doubt it since the last few upgrades where done from the phone itself and did not erase a thing. If you do it by the computer I'm sure it will.

Millions are waiting to upgrade, I'm one as I really think it looks great, there's no way they would delete your stuff otherwise too many customers would be upset, it doesn't work that way. You have nothing to worry about, and if you are really concerned then just don't upgrade, its not like you have to.