As of the time of this writing, the current version of Unity for Windows is Unity 2019.4.5. If you want to mess with cutting edge features, there's also a beta version, Unity 2020.1.0.

In addition, Unity Personal projects will now be able to stay on that free tier until the developer behind them makes $200,000 in annual revenue, an increase from the previous $100,000 revenue cap.

"Unity’ s Audience Hub represents a new era of omnichannel audience targeting and insights being driven by companies like Unity," said Yves Poire, co-founder and CEO of Optable." ...