Contrary to my previous understanding of the planned disruption in at least two ways, Hills Road is now one way southbound to motor traffic from OLEM all the way to Station Road (using the usually-northbound side of the road). There are also barriers placed to create a lane for northbound cycles.
Not so long ago the land between King's Hedges Rd and the A14 was undeveloped; there was a car repair place for a while and the other path, but for the most part its main use was people walking their dogs. Over the last few years it's acquired housing and a school.
I think the houses look quite nice from the outside (though I'm sure they're not to everyone's taste).( However, the place is still a building site )