Should I get the Iphone 5s or wait for the Iphone 6?

At least wait a bit longer because soon they will know when it is coming out. It is clear though that the 6 will be a massive upgrade. So far rumour has said it will be a 4.7 inch screen, possible 3d camera, better resolution screenand camera, smaller body that isn't screen, wireless charging, touch controls like volume and lots more.

I suggest first of all you shouldn't listen to those sites. Apple has been releasing new phones in September time. Now apple does release specs and photos on how the phone will look and what it can do in June. There would be no point for apple to release a brand new phone 7 months later after they just released a brand new model. That would be a dumb marketing move. Now I suggest you wait for the iphone 6. If you are a person who is cheap and doesn't want to spend to much money the. Still wait until the 6 comes out so you can get the 5s for 99 dollars or the 5c for free. But if your not and you don't mind waiting then get the iphone 6. Hope this answered you question

the 6

"Do you think I should just get the 5s or wait for the Iphone 6?"

I don't understand the point of this question. Your question says that if the new phone comes out September, you'll just get the iPhone 5s now. Doesn't that mean that you've already made up your mind? If that was part of the question, is there any reason you won't wait beyond June? If you're so concerned with getting the newest phone, why not wait?

"some sites are saying it'll come out in June"

No site knows for sure; I haven't seen anything that says that Apple is going to release it any earlier than they had the 4s, 5 and 5s/5c, and those models came out late summer, early fall.

Get the iPhone 6

Get the iPhone 5S now. iPhone 6 isn't coming anytime sooner than September.

Find the latest iPhone 6 updates here: http://senseiphone.com/iphone-6

5S is a great phone, you dont know how long you will be waiting for the next version.