Sitecore 10 has a focus on enhancements from Sitecore 9 including development and deployment options and increased usability and performance. You can use docker for development in Sitecore 10 as well as Headless ASP.NET Core. A new Content Serialization was also introduced.
The Sitecore User Group Michigan had a meeting to recap what is new in Sitecore 10. Below is a recording of the meeting.