I keep hearing that they are gearing up for a large push on KHs. They've started a few in the US in densely populated areas. It would make sense that they start a few to get the rhythm and work the kinks out. Once they've got a template, they can start replicating that across the US. It's taking them a long time, but it is a big change. They're going from a hybrid residential model to a commercial model.
Unless they want mass defections, I think they have to kick the KH building in the US into high gear within the next year. The sales from the recent buildings they listed should give them the cash needed to start a large number of KHs.