Let's talk iPhone is less than a few minutes away and the latest scoop is that the much-anticipated new iPhone will not be the iPhone 5 but an upgraded smartphone called iPhone 4S.

Why? Firstly because there is no indication of a 5 in Apple's invitation. On the contrary, it has a big 4, which means not only Oct. 4, but also it could mean an iPhone 4S.

According to Phone-Ticker.de, Vodafone.de had begun listing two versions (black and white) of the iPhone 4S on its website. Vodafone.de shows the iPhone 4S will come in 16GB, 32 GB and 64 GB.

The 9to5Mac reported that Apple will release an iPhone 4S and an a new iPod Touch. It said the new iPhone has been listed in the company's inventory system as SKU N90A.

The CNet reported that the new iPhone would feature an advanced voice-recognition technology-based interface. This feature called Assistant is a voice control feature powered by Nuance's speech-to-text dictation.

According to 9to5Mac, Assistant is activated by holding down the phone's home button for a couple of seconds. This feature reportedly even works when the screen is locked.

Users can create calendar appointments via voice, using normal English sentences. Users also can create and send an SMS or iMessage by simply speaking into the iPhone.

This is not surprising. Apple acquired voice-recognition application startup Siri in 2010, causing much speculation about a possible system-wide voice assistant for the iPhone 5. Allowing users to control the iPhone 5 completely hands-free would certainly push Apple ahead of the Android. Apple is likely to add 1GB of RAM to the iPhone 5 in order to accommodate the voice assistant.

Furthermore, the iPhone 4S will also feature an 8-megapixel camera, a dual-core A5 processor and more definitive GPS features, according to The Next Web.