Really looking forward to see this in action. Is follow the workload already present in 1.1.3?

Is there a bit more detailed technical doc on how this is actually achieved ideally with some examples? When is it decided that the lease holder moves from one node to another? Is it based on some sort of stats?

Edit: found the doc follow-the-workload here: https://www.cockroachlabs.com/docs/stable/demo-follow-the-wo...