The tech giant chose to launch the feature quietly and only announced it on its private Google+ community for beta users. According to Thurrott and Windows Central, though, you can take the feature for a spin by toggling on the new "Read incoming messages aloud" option in the Settings menu. It'll instantly work if your phone is connected to a Bluetooth device, like the car's or any other Bluetooth speaker. But apparently, there are options you can switch on so that Cortana will always read texts aloud or whenever your phone is connected to a wireless headset.

It'll likely take some time before the feature gets a wider release, depending on how it fares during the testing period. In case it's something you need right now, though, you can head over to Cortana's beta page to become a tester.