On Tuesday, Apple seeded iOS 7.1 beta 5 to developers for testing. The beta is a pre-release of the software that Apple gives developers to try out before releasing the software officially to the public.
iOS 7.1 beta 5 comes a little over two weeks after the developer seed of iOS 7.1 beta 4. Beta 5 improves the Siri voice for other languages and accents, as well as a number of other miscellaneous improvements.
The iOS device initially uses a compact voice for Siri. After you have configured a Wi-Fi network and have the device connected to a power source, iOS will automatically download and install a higher quality version.
Those on the developer update channel that aren't jailbroken and have no intention of jailbreaking their device will find the iOS 7.1 beta 5 update under the Software Update preferences pane in the Settings application. It comes in at just under a 100MB download.