According to the site, nowhereelse.fr, Apple will rollout three versions of the iPhone in 2013 with the Apple iPhone 5S providing an incremental update before major changes are made on the Apple iPhone 6. A third model, called the Apple iPhone Math or the Apple iPhone +, would offer a large sized version of the phone, possibly 4.8 inches, to compete with Android phablets like the Samsung GALAXY Note II. With its 5.5 inch screen, the Samsung GALAXY Note II has proven to be quite successful and the next version of the device is said to have a 6.3 inch display.
The rumor that has spread from water cooler to water cooler has Apple launching the next version of the iPhone sometime between March and July of this year, with a second device getting released near the end of 2013. One rumor that has been hard to kill is the one that calls for a low-priced version of the Apple iPhone, with a smaller screen and polycarbonate shell, to be released in emerging markets.