The position of this roundabout as currently mapped is slightly off from the construction footprint currently visible in Esri World Imagery. At the time of this note, all other imagery still shows the previous intersection configuration without a roundabout.

Additionally, I believe there is now a separate bicycle path parallel to Millpond Road, extending West somewhat from this roundabout, and extending East at least as far as the County Road AB interchange (there is already a note there regarding bicycle infrastructure).