The post says that it's being rolled out gradually on Release channel, so as long as you haven't blocked automatic updates in various ways, you'll get it soon (

The post says that it's being rolled out gradually on Release channel, so as long as you haven't blocked automatic updates in various ways, you'll get it soon (assuming that the rollout continues without any significant issues being uncovered that halt it). Presumably if you want to run ahead of that, there's ways to get it early via Beta or Nightly channels, but I don't know what those are.