It would seem that the mobile update had only a slight effect out of the gate, but all indicators point toward Google giving an edge to websites that are mobile friendly.

After the dreaded Mobilegeddon update from Google, what terrors have befallen the SERPs? Dr. Pete will regularly update this post with the latest from the Mobile Mozcast.

Source: 7 Days After Mobilegeddon: How Far Did the Sky Fall? – Moz