Apple's ad copy above appears to be right. Apple is the first to squeeze a 64-bit processor into a consumer smartphone from a top-tier vendor.
It "is the world's first consumer ARM based [system-on-a-chip] with 64-bit support," wrote Anand Shimpi of chip site Anandtech.
Apple's previous A series processors and ARM chips from other suppliers, like Qualcomm, have all been 32-bit.
This could be significant if data-intensive games and apps take advantage of the wider data path. Apple said iOS 7 has "a native 64-bit kernel" and "all built-in apps have been re-engineered."
Generally, 64-bit chips in the PC space can address more memory and, thus, can be better at running more demanding software.
In fact, Apple referred to it as a "64-bit desktop class architecture" in its presentation Tuesday.
And to demonstrate the A7's mettle, Apple brought Epic Games and its latest title, Infinity Blade 3, on stage.