The article does say Android will be used, but it doesn't say it will be used for anything other than infotainment.
It isn't totally clear, but there is one fairly strong hint that there will be separation. They quote Singer (the person in charge) as saying, "What we are now doing with these so-called enabling functions is taking them out of customer functions, putting it in a middleware software layer." In context, it seems to be contrasting that against designs where the car's basic functions were too entwined with infotainment, so "taking out" seems to suggest separation.
It isn't totally clear, but there is one fairly strong hint that there will be separation. They quote Singer (the person in charge) as saying, "What we are now doing with these so-called enabling functions is taking them out of customer functions, putting it in a middleware software layer." In context, it seems to be contrasting that against designs where the car's basic functions were too entwined with infotainment, so "taking out" seems to suggest separation.