Yeah something I should get used to asking when this is discussed is the language being used.
Our new all-neural, on-device Gboard speech recognizer is initially being launched to all Pixel phones in American English only. Given the trends in the industry, with the convergence of specialized hardware and algorithmic improvements, we are hopeful that the techniques presented here can soon be adopted in more languages and across broader domains of application.
Source: https://ai.googleblog.com/2019/03/an-all-neural-on-device-speech.html