We are now into our third day of levelling - amazing how much dirt can get moved around. To me, it looks like a tractor, bobcat and excavator going around in circles, but apparently its doing something. Not sure when it will be finished
Plumbing and formwork needs to be done next, before concrete can be poured, so I don't image we'll have a slab for another week or so. Presumably once the levelling is finished they will move fast to do the next steps so it doesn't get 'unlevelled'... wishful thinking.