At WWDC Monday, Apple announced that this year’s macOS High Sierra will be the last macOS release to support 32-bit apps “without compromises.”

64-bit from Apple KeynoteStarting in January 2018, all new apps submitted to the Mac App Store must be 64-bit capable and, as of June 2018, both new apps and app updates must be 64-bit capable. Submissions not matching these requirements will be rejected as a matter of course.

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Nothing was said about limitations in macOS itself, so it’s possible the “without compromises” refers only to Mac App Store apps. It’s possible, though, that these limits and requirements will spill over to other aspects of macOS.

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Scott B in DC

What about 64-bit apps for iOS?