AppleInsider writes,

Users from Argentina, Austria, Belgium, Brazil, Canada, Italy, Pakistan, Poland, Portugal, Germany, Mexico, the Netherlands and Russia are reporting the appearance of Apple’s new two-step verification feature, which was previously limited to the US, UK, Australia, Ireland, and New Zealand.

As updates are rolling out, Apple’s support documentation hasn’t been updated to reflect the changes. For those that now have access to Apple’s Two-Step Verification for your Apple IDs, I’ve written a comprehensive how-to that should clear up questions about anything you might see as you go through the process.