Samsung is a copier. It is a follower.
Thus, Samsung is going to copy Apple's lead to create 64-big processors.
The problem is Samsung has to follow Google. It has to wait until Google has a 64-big version of Android.
Samsung is forever the follower and copier, not the leader.
To be a leader, Samsung will have to develop its own fork of Android. But it is scared to since this means it will have to also create its own mapping app and other cloud services.