Some of the changes I noticed was the use of the classification system to grade the effectiveness of treatments. In regards to the interventions, previous grade A interventions form 2008 (cervical manip, strength/endurance exercises, and pt education) were no longer grade A interventions for the classified groups.
I also found it interesting the amount of modalities that were listed. Previously in 2008 electrical stimulation was never mentioned and laser was only mentioned in one study that found it ineffective. However, in the updated CPG it they were both mentioned numerous times from many studies and were found to be more effective than cervical and scapular endurance exercises when treating chronic neck pain with mobility deficits. However, these treatments were not recommended for patients with headaches or radicular symptoms.