teknic111 :
If the iPhone doesn't have over 4 gigs of RAM, what good is a 64 bit processor???
Because to switch from 32-bit to 64-bit takes time - It doesn't happen overnight - Developers need to rewrite a lot of code and make it work well.
If Google switches Android to 64-bit, they are gonna pour a lot of effort to make the transition smooth for devs as it makes a difference on the finished product.
You may be too young to remember the switch from 32-bit to 64-bit CPUs on the desktop but it took a while before programs took advantage of it. Furthermore it happened way before we hit the 4GB ceiling for 32-bit OSs but there were a lot of issues and giving people more time to port and to develop is a good idea.
More importantly, the Apple chip uses ARMv8 ISA which thus far hasn't been used by any phone/tablet. It's the next generation ISA with better performance than the current ARMv7 ISA which is used in all current SOCs from Qualcomm, Samsung, etc...
Why do people question this move?