KYTC imagery shows that the new road is signed with a 4 digit number, so I'll add it as KY 3538. According to the KYTC local roads app, the route ends at the business park east of I-65, not at KY 480, but a field check would be helpful to make sure that it's not signed at KY 480.
https://github.com/TravelMapping/HighwayData/pull/4635