Ring in the new year with the latest Apple iPhone, iOS 7 rumors

The iPhone 5 in white.

Apple fans sure are quick. It's only the second day of the new year and already new iPhone rumors are on the loose.

The Next Web reports that Apple may already be testing a new iPhone and mobile operating system. The blog cites developers who have spotted "new iPhone identifiers" that suggest the tech giant's next big update.

"One developer showed us that Apple has been testing hardware relating to a new 'iPhone6,1' identifier, powered by a device running iOS 7, which is expected to be released by Apple in the middle part of this year," The Next Web's Matt Brian writes.

Brian notes that the iPhone 5 uses the identifier "iPhone5,1" and "iPhone5,2." The Next Web did not report any any details of what the next iPhone or mobile operating system might include.

Analysts are claiming that the next iPhone could come in multiple colors like the iPod and iPod Touch.

According to MacRumors, Jeffries analyst Peter Misek and Topeka Capital Markets analyst Brian White both suggest that Apple could release up to 8 different colors.

White even goes as far as saying that there could be different screen sizes. Apple's iPhone 5 has a 4-inch display, which is the first time the company increased its screen size since the launch of the original iPhone with a 3.5-inch display.

"Although Apple offers a 4-inch screen on the iPhone 5 and a 3.5-inch screen on the iPhone 4S and iPhone 4, the Company has never offered multiple screen sizes for a single model," White writes.

"We believe this is about to change with the next iPhone offering different screen sizes that we believe will allow Apple to better bifurcate the market and expand its reach."

Apple announced the iPhone 5 on Oct. 12, 2012. The smartphone features a 4-inch display, 4G LTE, 1080p HD video quality, 720p HD front-facing video, Panoramic photos, a new Lightening connector and EarPods.