Earlier they could only announced there was a customer. Not which one. But today, they apparently where allowed to tell who, and which product it debuted in.
And as it turned out to be Vivo, one of the world's largest smartphone OEMs it's a very significant event! It's the 5th largest OEM in the world (by global market share), and their parent company (BBK) also own OPPO, the 4th largest in the world. That could be important for the future as well.
For reference, the third largest (Huawei) is already a well established IMINT customer, while the second and first is Apple and Samsung.