I don't get all the hate. I guess it will be a pain for a while when apps are being updated, but as far as performance goes? The A7 in the iPad Air geekbenches 2500 as a dual core. Now take an A8 chip, scale it up to 4 times the cores of its predecessor and where do you think it will be performance-wise? Should be at least on-par with the i7 in the MacBook Pros.
Apple takes their time with these things. First putting a desktop class 64-bit chip in their phone and tablets. Next I'd expect to see a quad-core A8 in the iPad Pro. This would get software companies on board with making more professional quality software for ARM-based chips? They would learn how to optimize performance. I don't know exactly how Xcode differs between iOS and Mac versions, but there could be some announcements of new features that could suggest making apps for both platforms could become increasingly similar. Apple thinks about the whole integration from top to bottom. Then the Arm MacBook Air will come, shortly followed by the MacBook Pros and the iMac, and lastly the Mac Pro once the hardware and software have more time to mature. I could imagine that cylindrical design stacked with 32 A9 chips and a new version of Mac OS that takes advantage of that in new and exciting ways.
Apple takes their time with these things. First putting a desktop class 64-bit chip in their phone and tablets. Next I'd expect to see a quad-core A8 in the iPad Pro. This would get software companies on board with making more professional quality software for ARM-based chips? They would learn how to optimize performance. I don't know exactly how Xcode differs between iOS and Mac versions, but there could be some announcements of new features that could suggest making apps for both platforms could become increasingly similar. Apple thinks about the whole integration from top to bottom. Then the Arm MacBook Air will come, shortly followed by the MacBook Pros and the iMac, and lastly the Mac Pro once the hardware and software have more time to mature. I could imagine that cylindrical design stacked with 32 A9 chips and a new version of Mac OS that takes advantage of that in new and exciting ways.