#Apple is enforcing 64-bit support for all apps and updates by June 2015. What will they announce at #WWDC2015? New system architecture?
#Apple is in second year of 64-bit migration plan. After next year, all #iPhones will be with 64-bit hardware and stable iOS for developers.
Moving to #64bit will take years. #Apple probably spent a couple of years planning the testing it already, #Android hasn't even started yet.
#Apple did OS X 32-bit to 64-bit completely seamlessly to users over a few years. That's why it is the right time to do iOS 64-bit now.
Professors or purists will only tell you about 64-bit software won't run on 32-bit devices, #Apple will show you with Universal Binaries.
#Samsung is a follower.They just came out and cried "I will do 64-bit phones next", forgetting that they will need #Android to be ready too.