In Britain, users will get an app that has a British accent and be up to date about English Premier League soccer and other local matters.
Users in Australia, Canada and India will also be allowed to use a version of Cortana, although the Redmond, Wash.-based company said that would be an earlier test mode and tailored to U.S. and U.K. audiences.
The update, described in April at Microsoft Corp.'s developer conference, will also introduce new hardware capabilities as the software giant seeks hardware partners beyond Nokia, whose device unit it purchased in April. Although Nokia has accounted for most of the Windows Phone shipments today, Microsoft has signed up 14 new manufacturing partners in the last six months, including heavyweights like Samsung, HTC, Huawei and ZTE.
The update allows for phones to use two SIM cards, supports a better screen resolution for lower-end phones and adds support for so-called "smart covers" that give users brief notifications through a small window in the cover like on Samsung's S4 and S5.
Additionally, the update adds support for faster charging and improves support for Bluetooth accessories like fitness tracker wristbands.
On the software side, the update will now allow so-called "live tile" icons to be grouped into folders, a functionality that has long been available on Apple iPhones and devices that run Google Inc.'s Android operating system.
In Windows Phone, however, the tiles show snippets of information from the apps. The folders will show snippets from four to 18 apps in the folder at once.