iphone_6s_roundup_headerWe're on a countdown to the big unveiling of Apple's latest iPhones. The iPhone 6S and 6S Plus will likely be introduced by Apple at a special launch event on the 9th September - invitations have already been sent - with the iPhone 6C rumoured to following a couple of months later.

It's hard to believe that the next wave of iPhones will be Apple's ninth generation. It's been almost a year since the iPhone 6 and the larger 6 Plus made their debut in September 2014. The S series of iPhones is always a step up from the original models so it's expected that the iPhone 6S and 6S Plus will offer higher specs and improved features over the iPhone 6 and 6 Plus.

The design and look of the premium iPhone 6S and 6S Plus is expected to be similar and the screen size is expected to remain at 4.7-inches for the 6S and 5.5-inches for the 6S Plus. Reports suggest that we could see an extra colour option for the handsets with a Rose Gold colour likely to be available alongside Gold, Silver and Space Grey.

After the widely reported 'bendgate' issues with the iPhone 6 and 6 Plus, there's speculation that Apple have strengthened key areas of the handsets to ensure there are no further problems. Apple may have also decided to use a stronger type of aluminium in the new iPhone frames - the Apple Watch is built with 7000 series aluminium which is claimed to be 60% than the usual type.

Also anticipated to be included in the new iPhones is an A9 chip which will be quicker and more efficient than the A8 processor. Apple may also up the RAM to 2GB from 1GB whilst the storage options of 16, 64 and 128GB are likely to remain the same.

It looks like Apple will upgrade the rear-facing cameras for the new iPhone 6S and 6S Plus so we could see a 12-megapixel camera - up from 8-megapixels on the 6 and 6 Plus. The more powerful cameras are thought to be able to record in 4K and will feature an additional microphone for enhanced audio quality.

One of the most exciting new features for the new iPhones is thought to be Force Touch technology which is already used in the Apple Watch. Force Touch can differentiate when the screen is being tapped or pressed hard, different types of pressure when touching or pressing the screen can enable the iPhone to respond in different ways. For example, a tap on an app icon could open up the app whereas if the screen is pressed down for a longer length of time then a sub-menu could open up.

There's been a lot of speculation surrounding Sapphire Glass over the last year - there's certainly demand for more a more robust and scratch-resistant iPhone screen so this would be a massive selling point if Apple are able to pull it off for the iPhone 6S and 6S Plus.

And finally, there have been numerous rumours of late which suggest that Apple are in fact planning on bringing out a new budget iPhone. Expected to be a successor to the iPhone 5C, the iPhone 6C will also be compact in size and will sport a 4-inch display. It's likely that the iPhone 6C will be designed along the same lines as the 5C with a plastic build however it could benefit from some of the same specs as the premium iPhone 6S and 6S Plus such as the new A9 chip and possibly Force Touch screen technology.

Look out for more news and the latest updates on these upcoming iPhones over the next few weeks.