In an earnings conference call on Wednesday, Facebook CEO Mark Zuckerberg told investors that the company’s next hardware launch will be “smart glasses” made in partnership with classic sunglasses vendor Ray-Ban.

Zuckerberg segued into the Ray-Ban announcement following a lengthy discussion of Facebook’s plans for Oculus Quest, its all-in-one virtual reality (VR) platform. Zuckerberg says that social media is the real “killer app” for VR, backing that up with data from Oculus Quest: “The most popular apps on Quest are social, which fits our original thesis [that] virtual reality will be a social platform.”

Zuckerberg intends the as yet unnamed smart glasses to be a stepping stone, not an end goal. He remained cagey about their actual purpose, saying only that the glasses “have their iconic form factor, and [let] you do some pretty neat things,” with no concrete details about what those “neat things” might be.