Review: Nest Hub (2nd gen) sleep tracking ushers in a radically more pervasive Google Assistant
It's the review title of this media. Why is there an indefinite article 'a'? Because Google Assistant is a proper noun and it is not used as a common noun in the context I presume there should not be 'a'.
This is actually a fairly common idiom in English, especially in advertisements and news articles. The implication is that the product is not unique---perhaps a new version every year, or perhaps it has been revamped. But this is often applied to people as well. Consider this print title:
"A New Donald Trump? Moving Holocaust Speech Wins Praise From Jews, Derision From Alt-right"
Of course the are referring to the same person, but they are implying something like the person has re-invented themselves or changed tactics.
