64-bit software gets a performance boost, but many apps still aren't on board.
by Andrew Cunningham - Oct 20 2014
Apple's A7 was its first 64-bit chip. Now, the company is ready to mandate 64-bit support.
Apple released iOS 8.1 to the public today, but it delivered something else to developers too. As of February 1, 2015 Apple will require all App Store submissions to include 64-bit support and to be built with the iOS 8 SDK.
If you've got an older iPhone or iPad (anything with an Apple A5 or A6 chip in it) this announcement means nothing to you. Like their OS X counterparts, 64-bit iOS apps can be distributed as universal binaries that support both 32- and 64-bit processors. 9to5Mac also reports that existing 32-bit apps will remain in the App Store. Only developers submitting new apps or updates to existing apps will need to comply with the new rules. Apple is usually fairly aggressive about mandating use of its latest developer tools. It required developers to switch to Xcode 5 and comply with iOS 7's new design rules in February of 2014—for older devices, this is just business as usual.
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