Initially noticed by 9to5Mac new countries receiving the feature include China, France, India, Japan, Korea, South Africa, Thailand, Switzerland, and many more across Asia, South America, and Europe.
First launched in March of 2013, two-step verification is designed to provide Apple users with an extra layer of protection through the use of a trusted device and a security code for their Apple IDs. Two-step verification was initially limited to users in the United States, United Kingdom, Australia, Ireland, and New Zealand, and expanded to several additional countries later in 2013.
Two-step verification may also be applied to iCloud.com in the future, in addition to Apple IDs. Apple's two-step verification support page has a full list of countries that are able to access the feature.