The mystery of Nest’s June 17 event might have been solved, thanks to a just-discovered filing at the Federal Communications Commission. The Google-owned smart home company, which bought DropCam last year, entered paperwork with the FCC for a new "wireless camera" of some sort. See also: Google's Offering Smarter Tools For Smarter Apps And HomesSpotted by 9to5Google, the FCC application by Nest Labs Inc.