I doubt it'd be perceptible, it would just be nicer/convenient to use, especially if it has a gooseneck pourer. Some people do say bringing water to 95 deg is better than bringing it to the boil then cooling to 95.
It would also be good to have a dedicated kettle that only ever sees filtered water.
Is getting a temperature adjustable kettle going to seriously improve coffes made in v60/aero press ?