On March 22, 2019, Apple’s new map expanded to Arizona, New Mexico, and Clark County, Nevada (Las Vegas’s county):

This is the third time Apple has expanded its new map since its launch in September 2018:

With this latest expansion, Apple’s new map now covers 11.2% of the U.S.’s area...

...and 16.1% of its population:

At 243,639 sq mi, this latest expansion is Apple’s largest to date:

It’s also roughly five times larger than the previous expansion, and the previous expansion was roughly five times larger than the one before:

This suggests that Apple is accelerating. And if Apple continues expanding at 5x, it’ll cover the entire U.S. after just two more expansions:

On average, Apple is expanding its new map every 62 days: