Some servers are moving to Perth (far Western Australia), which benefits players in Europe. And some to Sydney (East coast), which benefits players in North & South America.
The ping improvement will be between 70-100ms depending on where you are. It isn’t much difference for prediction times. But it should significantly improve remote desktop connection quality.
The whole migration process will take around 2 weeks. It will depend on variables beyond my control, like data center staff schedule. I expect the downtime will be around 10th – 20th March.