Stephen Shankland, CNet:
But Apple is smart to lay the foundations for 64-bit mobile computing now, for three reasons. First, large memory capacity is an academic issue in the mobile market today, but it won’t always be. Second, the 64-bit transition happens to come along with other chip changes that are useful immediately. And third, it gives Apple more flexibility to build ARM-based PCs if it chooses to embrace an alternative to Intel chips.