Apple has released iOS 9.2 as a Public Beta, and one of the features alongside the bug fixes and installed extensions for safari tabs in third party apps, is that Siri now understands the Arabic Language and it replies in Arabic too!
Here’s a video that demonstrate this feature:
The final version of iOS 9.1 was only sent out to the public last week, so you should probably expect a few more betas before iOS 9.2 is finished.
Elie Chahine 