Everyone wants to know when the iPhone 5S release date is almost as bad as they want to know when the iPhone 6 release date is. And what, exactly is the iPhone Math and when is its release date?

According to Yahoo! News Finance, all three of these products will be out by the end of the year.

Like most iPhone rumors and release date news, this story starts with some insider info from Chinese manufacturers. Yahoo traces the report back to a piece by the Commercial Times of Taiwan, which was picked up by the China Times and then translated by Bright Wire.

According to the new reports, Apple is looking to release the iPhone 5S by the end of June. This is consistent with earlier rumors putting it on the same timetable. The iPhone 5S June release date came from two reliable industry analysts, Peter Misek and Ming Chi Kuo. Misek wrote an investor report in December that discussed Apple's manufacturing plans for the new iPhone.

"Our checks indicate that preliminary builds for the iPhone 5S will start in March for a launch in June/July. As word of the earlier production schedule starts to spread, we believe we could see a slight slowing of demand CQ1 in anticipation of the new product launch and Apple will likely start curtailing channel inventory," Misek wrote in the report.

The iPhone 6 release date is less predictable. Obviously, Apple won't stop making iPhones after releasing the 5S. And since calling a phone the 5S2 sounds dumb, it stands to reason that an iPhone 6 is the next step. According to the Yahoo report, Apple is considering a 12-megapixel camera for the iPhone 6 and wants to release it by the end of the year. More specs for the iPhone 6 are hard to come by, but there have been numerous rumors about it including a fingerprint sensor to deter criminals and add security to the device. The iPhone 6 may also include Apple's first foray into NFC tech, if it doesn't show up in the iPhone 5S first.

Another industry insider, Brian White of Topeka Capital Markets, told investors that the iPhone 6 will also be the first iPhone to come in a wide array of colors. He also speculated that the iPhone 6 will be the first to come in different sizes, offering customers a wider range of display options and price points as well.

So the iPhone 5S release date is likely coming in June, and the iPhone 6 should be out by year's end (likely September, based on past releases) but what of the mysterious iPhone Math. According to Yahoo the name 'iPhone Math' may be a translation error, but there's no mistaking the hype surrounding this curious little device.

According to the Washington Post, the iPhone Math will likely feature a 4.8-inch screen, a move that is seen as an attempt by Apple to get into a wider share of the mobile marketplace. (Specifically, all the people who chose the 4.8-inch Galaxy S3 over the iPhone 4S and iPhone 5.) Apple Digger produced a mock-up for an iPhone Math prototype, in case you're having trouble picturing what a bigger iPhone would look like.

The iPhone Math release date is being called into question by some. There were reports that suggested it would debut alongside the (strongly predicted) June release of the iPhone 5S. However, a report from DigiTimes suggests that the iPhone Math won't be on the market until 2014.

"Previously it was said that Apple would release a lower-cost version of its iPhone with a bigger screen in 2013. But the sources claimed that Apple is indeed developing an iPhone with a bigger screen, but that will not be among the models to be launched this year," said the report.

What should we make of all these rumors? The iPhone 5S release date rumor is the most solid. A June release date has been predicted by industry insiders and been widely reported by a number of tech sites. The iPhone 6 release date is a little shakier, relying more on the logical progression of Apple releases than any firm information.

The iPhone Math is the least likely of the three release dates, in part because there are a number of reasons to suspect that the iPhone Math doesn't even exist, particularly considering Apple's quality over quantity approach to smartphones. The iPhone Math rumor really has its base in reports that Apple is ordering larger screens but for what purpose? We simply don't know.