This is Apple’s roadmap for moving the first Macs away from Intel

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  ARM Macs get a whole Apple SoC, with lots of components. [credit: Apple ]

After 15 years, Apple will again transition the Mac to a new architecture. The company announced at its developer conference today that it will introduce Macs featuring Apple-designed, ARM-based processors similar to those already used in the iPhone and iPad.

Tim Cook pegged this switch as one of the four biggest transitions the Mac has ever had. Alongside the move to PowerPC, the move to Intel, and the transition to Mac OS X, ARM will be one of the biggest Mac changes ever. Apple is promising "a whole new level of performance" with a "Family of Mac SoCs.

Longtime Apple users have been through all this all been through this before, with the transition from PowerPC to Intel, and now for Intel x86 to ARM, all the big platform transition hits are coming back. The transition to ARM from x86 means that some Mac apps will be native and some won't. For apps that support both x86 and ARM, Apple is introducing the "Universal 2" binary that will package both codebases together. For apps that haven't made the transition to ARM yet, the Rosetta emulator is back as "Rosetta 2," and will now let x86 apps run on your ARM Mac, albeit with reduced performance.

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