New code found within iOS 5.1 suggests that Apple is currently working on iOS devices with quad-core chips. According to 9to5Mac, iOS 5.1 includes updated processing-core management software that makes references to an option of “/cores/cores.3”, which according to people with knowledge of iOS’ inner workings, refers to a four-core chip, as “cores.0” refers to a single-core device, and “cores.1” to a dual-core chip. As noted in the report, the presence of this reference in iOS 5.1 suggests that the next-generation iPad, which is likely being tested using the software, will feature a quad-core processor. iLounge’s Editor-in-Chief Jeremy Horwitz, citing a reported yesterday that the device is likely to be launched around the same time as the iPad 2 was a year ago; the iPad 2 was launched on March 11.
Code found in iOS 5.1 points to quad-core chips

Charles Starrett
Charles Starrett was a senior editor at iLounge. He's been covering the iPod, iPhone, and iPad since their inception. He has written numerous articles and reviews, and his work has been featured in multiple publications.