Nokia — the remaining phone-free Finnish firm, not the handset business that Microsoft bought and recently renamed — has something in store for us. In a Monday tweet teasing the unveiling of “something” on Tuesday at the Slush Festival in Helsinki, Nokia showed off a black box with the company’s familiar logo on the top. All very mysterious, especially considering that, while the company has hinted at a return of its brand to consumer goods, it appeared to do so in the context of brand licensing. The remaining bits of Nokia deal with location-based services and mapping, network equipment and advanced materials research. The black box in that picture doesn’t look like any of those.