Apple will take you through a phone verification process, much like Google Maps and other mapping services would do. After the update or addition is submitted and verified via the phone, Apple says it would take about week to show up. The feature is only available for US business, but Apple hopes to expand it globally soon. There is also another feature named “Indoor” that enables highly trafficked businesses to use iBeacons to enable users to map the inside of their stores and venues. It is currently a beta feature that Apple is testing. Get the full story at Marketing Land and Apple Maps Connect