However! It will be very different on the inside.
So, yes, we should get a faster processor.
Apple is reportedly testing a 64-bit "A7" processor, which should make the phone 31% faster.
A7 is just the name Apple gives its custom-built mobile chips. Mark Gurman, who reported the new chip, says the 64-bit should make animations and graphics smoother on the new phone. This is important since iOS7, the next version of the software uses animations.
A 31% speed bump sounds good, but last year Apple doubled the speed of the phone, so this would not be all that impressive.
The phone is also reportedly getting a fingerprint scanner.
This is the biggest question mark floating around about the iPhone 5S. There are a lot of reports that it gets some sort of fingerprint scanning technology which will be used to unlock the phone. However, there haven't been any leaked fingerprint scanners. Since Apple is currently making millions of iPhone 5Ss, you'd think a scanner would leak.
How much will the iPhone 5C cost?
This is the big, unanswered question right now. It's not going to be cheap. People seem to think it will cost $400-$500. This is expensive for a cheap phone, but Apple probably thinks people will be willing to pay for it. Right now, an iPhone can cost $650-$1,000 off contract around the world.
When will you be able to buy one of these phones?
History suggests that if Apple announces the phones on September 10, then they will be available for purchase on September 20th.