Back in July Twitter introduced new targeting capabilities for Promoted Tweets that allow advertisers to target ads at users in a particular region rather than sending a blanket message to all followers regardless of where they’re located in the world.

Last night while the world went nuts for the iPhone 5, Twitter unveiled enhancements to its geo-targeting capabilities for Promoted Tweets and Promoted Accounts that allows marketers in the UK and Japan to target specific regions for the first time.

It takes Promoted Tweets down another level of targeting after the news in the Summer allowed advertisers to target campaigns only at Twitter users in the UK without hitting the rest of the world. That allowed marketers to launch national offers for the first time. Now it’s regional.

In addition to UK regions and major metropolitan areas, such as London and Manchester, the new geo targeting features are being rolled out to US states and several major areas in Japan such as the Tokyo region (Kanto), Osaka area (Kinki) and Nagoya area (Chubhu).

“In short, as marketers, you will reach the users you’re seeking more easily, in real time, and users will see more relevant, useful Promoted Tweets and Accounts in their Twitter web and mobile apps,” Twitter said.