Something that could almost be certain is that the new version of the Cheap iPhone 6s Sale will include 4G capability. Some may expect 4G to affect the iPhone 5 price but overall, that hasn't been seen with other manufacturer's devices. What version of 4G that the iPhone 5 would use is another question though.
Since AT&T Wireless is currently pushing their HSPA+ as their 4G with trials of LTE running or preparing to operate in some areas, I'd expect the GSM version of the iPhone to possess HSPA+ 4G as Apple has never taken the chance of setting up an element (4G LTE) when it isn't guaranteed to work. On another note, it's expected that a GSM/CDMA combination chip is going to be in the device and thus Apple can produce one phone and sell it on both networks which may help reduce the Cheap iPhone 6S Black Unlocked price.
Think about the speed of the device? Every newer version of the iPhone has been faster compared to previous and with the new A5 chip out, I definitely buy into the rumors that the newer iPhone will be the fastest of them, most likely blowing away all previous versions. 1GHZ dual-core maybe? With the existing price of the A5 chip, it is definitely possible that it could be within and wouldn't change the iPhone 5 price at all.
Currently the screen size appears to be up in the air. A lot of the sources say so it will add a 3.7" screen, up from the 3.5" screen of the iPhone 7, but another group says so it could add a 4" screen. I don't believe the screen would go bigger compared to 4 inches because that will be a major jump in the screen size and would most likely lead to an all-around new design of the device which may affect the iPhone 5 price in production. 4 inches remains a fairly big jump when we're referring to cellular phones, so I will agree so it will change to 3.7" IF it changes at all. With Gorilla Glass becoming more and more popular on smartphones nowadays, I feel that Apple could lock in a good deal for a more substantial screen size without it affecting the iPhone 7 Unlocked jet Black price at all.
Think about those cameras? The iPhone 4 has a 5MP rear-facing camera and a VGA front-facing camera which are both outdated to say the very least. Both cameras were starting to be outdated when the device was released. With 8MP rear and 1.3MP front becoming a norm of all new smartphones, I expect that Apple will always be with this norm and won't push to exceed it at all.
Pricing pricing pricing, that is the question! No major pricing changes have now been made over time each time a newer iPhone is released so I expect it to be the same this year. With sales soaring at their current sale prices, I don't see them lowering the iPhone 6s price to obtain more sales and I don't see them raising the purchase price because of the risk of losing customers. I expect the 3GS (on AT&T) to be stopped altogether, the iPhone 4 16GB and 32GB models to market for $100 less ($99 and $199 respectively), and the iPhone 4S/5 to market for $199 in the 16GB form or $299 in the 32GB form. Any diehard Apple fan will definitely jump throughout the $199 or $299 iPhone 5 price for a new phone and anyone else who just desires to join the bandwagon is going to definitely pay $99 for the iPhone 6s which can be still an amazing phone, especially at that price.
I really hope this information helped give you a notion of what you may anticipate with the new iP hone for sale price and specifications and as always, I wish you all the best with your future purchases!