Called the Garmin Out Front Mount, it essentially does the same thing as the offerings from Bar Fly (regular and TT versions), K-Edge, Quarq and 3T, but adds a couple of nice features to set it apart.
First, the mount clamp is hinged, which should make installation a bit quicker. Second, the insertion point can be rotated to let you mount compatible Garmin 310XT and 910XT watches, too. It’ll hold any of the three Edge computers.
It’s a composite material and comes in around 26g. US retail is $39.99 and it’s looking like it’s 5-8 weeks away from shipping.