More proof that Apple will launch its latest iPhones, new iPad, and revamped iOS 7 mobile operating system has emerged.

An internal document from Apple allegedly revealed that the time offs available for AppleCare employees from Sept. 15 to 28 have been significantly reduced, according to the AppleInsider. This window of two weeks suggests that the iPhone 5S and iPhone 6/5C will release on the purported date of Sept. 20.

The iOS 7 is also expected to release along with the new phones.

Apple's keynote event is rumored to take place September 10, where the new line of Apple iPhones – the iPhone 5S, iPhone 6/5C, and iPad 5, will finally be unveiled.

Six beta versions of the new iOS 7 have been released so far. The updated operating system will have a significant design change and a redesigned user interface. AppleCare employees are reportedly being trained to handle the influx of customer inquiries, which are bound to rush in when the Golden Master version of the new mobile operating system is released.

The budget iPhone 6/5C is expected have the same specs and features as the current iPhone 5, but will be encased with a cheaper body. The device is rumored to come with a plastic casing and chassis of both plastic and metal. The budget price does not mean that the screen will be compromised, as it is expected to come with a 4 inch retina display, A6 chip, and 8 megapixel camera. Apple will offer their iPhones in colors other than black and white for the first time- red, green, yellow, and blue.

The iPhone 6 will likely have an upgraded processor, with a quad-core A7 providing more power, better efficiency which would give better battery life too.

Some rumors have suggested the new device will also have a 13-megapixel sensor which should take up less room while still offering a top quality image for photos.

Eye-tracking and fingerprint sensors have also been touted, although it is not abundantly clear how certain those features are for the new device.

Others rumors surround the new iPhone having better 4G LTE, and wi-fi with an ultra-fast 802.11ac. Still other rumors suggest wireless charging will be unveiled by Apple, which would be a big step up, and a feature that is sure to go down well with smartphone fans.

The iPad 5 is also set to be unveiled with updated components.

Meanwhile, in anticipation of the arrival of the new iPhones, Apple has started its trade-in programs for older iPhones (iPhone 4, iPhone 4S, and iPhone 5) in exchange for credit towards a new iPhone. Customers can get expect to get up to $280 in trade-in offers.

"iPhones hold great value. So, Apple Retail Stores are launching a new program to assist customers who wish to bring in their previous-generation iPhone for reuse or recycling," Apple spokeswoman Amy Bessette stated in a press statement. "In addition to helping support the environment, customers will be able to receive a credit for their returned phone that they can use toward the purchase of a new iPhone."

Other websites such as Gazelle and Amazon have also ramped up its old iPhone trade-in program.