Forbes reports on a new research note from Jeffries & Co. analyst Peter Misek claiming that Apple's next-generation iPhone will be a relatively minor revamp known as the "iPhone 4S" and will debut in September. Misek also claims that Apple will be expanding carrier availability in the U.S. to include Sprint and T-Mobile by the end of the year, with China Mobile also reportedly coming on board. The "iPhone 4S" name first gained publicity last month in claims that Apple has been providing select high-level iOS developers with souped-up iPhone 4 devices, with the source citing an unofficial name of "iPhone 4S" for the device. Misek's report goes on to note that the next-generation iPhone is not likely to bring compatibility with faster LTE 4G networks rolling out in some markets, as the required chipsets from Qualcomm are not yet available in quantity to support the inclusion of the technology. The claim regarding a lack of LTE compatibility in the next-generation iPhone fits with earlier reports that the required chipsets won't be available to make their way into handsets until 2012. Article Link: 'iPhone 4S' Coming in September With Sprint and T-Mobile Support?