Apple to require iOS apps and updates to use iOS 8 SDK and include 64-bit support from February 2015

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Apple has today notified developers about some upcoming rules regarding App Store submission, via its developer news portal. From 1st February 2015, newly-submitted apps and updates must be built against Apple’s iOS 8 SDK. This is not particularly surprising: Apple required similar adoption of the iOS 7 SDK last year.

In addition however, Apple will also require that all apps and updates include 64-bit support from that date too. Currently, developers can choose whether to submit only 32-bit apps or universal binaries. This will no longer be an option from February. Moving all apps to 64-bit will bring big performance and memory gains for newer devices (which include A7 or A8 SoC’s) as running the 32-bit apps necessitates loading a lot of additional resources into system memory.

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Apple said to have tested 64-bit ‘A7′ chips for iPhone 5S, 31% speed increases reported

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As Apple’s iPhone 5S event approaches, some new details about the new device’s internals are emerging. Clayton Morris has claimed on Twitter that the iPhone 5S’s A7 processor is “running at about 31% faster” than the iPhone 5′s A6 chip. The iPhone 5′s A6 chip is dual-core, and it seems like the iPhone 5S will also remain dual-core.

However, there could be a major differentiator: 64-bit. We’ve independently heard claims that some of the iPhone 5S internal prototypes include 64-bit processors.

It’s unclear if 64-bit will make the cut, but it’s been in testing. We’re told that the 64-bit processing will assist the A7 chip in making animations, transparencies, and other iOS 7 graphical effects appear much more smoothly than on existing iOS Devices…

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