From theregister.com
Arm DevSummit Arm has set the date from when its high-end smartphone and laptop-grade Cortex-A processor cores will go fully 64-bit only.
And that date is some time in 2022, when Arm is set to unveil its CPU design code-named Makalu that we’d like to guess is the Cortex-A80. Subsequent top-end Cortex-A cores will also be 64-bit only, meaning no support for running 32-bit software natively. Devices using these 64-bit-only cores are expected to go on sale by 2023.