What's new guide has only a short section with no explanation or example. eDrawings has been able to annotate dxf/dwg for a while but is there a new functionality to reimport back to a SOLIDWORKS Schematic?
~MN
Annotate Documents with eDrawings 
You can annotate SOLIDWORKS Electrical documents, drawings, and schematics using eDrawings.
SolidworksSolidworks 2016 Beta