The KGI securities Analyst Ming-Chi Kuo has published a new report about that next iPhone will be thicker due to the Force Touch technology it will use, and it will have the same aluminum 7000 series that the Apple Watch Sport has.
The report shows that the next iPhone (iPhone 6s or iPhone 7) will be 0.15mm taller and wider because of the 7000 series aluminum that will make it stronger and more durable. The Force Touch technology will make it about 0.2mm thicker.
Kuo also says that the iPhone 6s will also come in a new rose gold color option to match the most expensive Apple Watch edition. And the normal gold iPhone version will be slightly changed to more like yellow gold to match the normal Apple Watch gold edition. And the space gray iPhone will be a bit darker to match the Apple Watch.
Earlier rumors has also said that the next iPhone will have 2GB RAM and a 12 megapixel camera. And of course an updated processor. Probably the A8x that the iPad Air 2 has.
Because of the slightly thicker design, I personally thinks that it could be possible that the next iPhone also will get a new battery design that will give it even longer battery life. And it's very excited to see that the iPhone will also get Force Touch technology. That means that we will see a lot of new interesting features in coming apps and in iOS that supports this new technology. It's full of possibilities.