I tried doing a limited google search for any news about that story that occurred since November of last year and got 0 hits. Did the case die or is it that the media just doesn't care enough for there to be a single update to the story?
There's activity on the case (2:17-cv-2313-PMD) as recently as earlier this month, but you'll need a Lexis or PACER account to dig in and see what's up. But it doesn't look dead. Amazon is going to probably bury the plaintiffs in paperwork.
They also recalled a number of good units, which only sowed confusion and anger among buyers.
https://www.usatoday.com/story/money/nation-now/2017/08/14/a...
And it turns out some of the counterfeit glasses did get out to to buyers who thought they were purchasing legitimate units.
https://www.reuters.com/article/us-amazon-com-lawsuit-eclips...