If my memory is correct, this most recently housed a Puma. Beyond the removal of the external wire-mesh, and the clearing out of the cage furnishing, it's hard to see that much has gone on here - although, of course, the stuff that takes time to do is often the stuff that isn't obviously straightforward to see.
@FunkyGibbon This is the last of the old cages, before the Cheetah exhibit. There used to be a Prairie Dog pit in front, here (they’ve now relocated to a much smaller display, near the Tierpark entrance).