This is a note from Wilma Hodges – the Sakai PMC member and Community Coordinator announcing Sakai 20 general availability.
Congratulations to our amazing worldwide community!
I’m pleased to announce that Sakai 20.0 is now available!
A HUGE THANK YOU goes out to everyone involved with developing, testing, and documenting the latest release. Even during a pandemic, our world-wide community has kept the momentum going and produced another Sakai release packed with exciting new features and enhancements. That is a tremendous accomplishment during these unprecedented times!
Our community wiki has both functional  and technical  release notes.
Download instructions are also available of course  .
New in Sakai 20
In Assignments: New Sakai Grader UI with document preview in the browser for student file submissions, as well as a progress bar for student submissions
OneDrive and Google Drive integration in the Sakai file picker
In Site Info: the Date Manager allows instructors to update all due dates in a single page, and Auto-Groups enhancements simplify the process of creating groups in a site
Several Gradebook enhancements, including: equally weighted items within a weighted category, full screen mode, resizable columns, a new Section column, and the ability to Message Students directly from the Gradebook
User Activity tab in Statistics provides detailed user data for instructors, and students also get a view of their own activity
In Tests & Quizzes: ability to restore deleted assessments, flag individual questions as extra credit, and schedule assessment feedback display start/end dates
New CK Editor templates available throughout Sakai in the rich text editor
Student name pronunciation feature in Profile
“To the top” button to jump back up to the top of the page
Updated UI in Podcast tool
And more! 
 Functional release notes – https://confluence.sakaiproject.org/display/DOC/Sakai+20+Release+Notes
 Technical Release notes – https://confluence.sakaiproject.org/display/DOC/Sakai+20+Technical+Release+Notes
 Download instructions – http://source.sakaiproject.org/release/20.0/
 Complete Feature Summary – https://confluence.sakaiproject.org/display/DOC/Sakai+20.0+Complete+Feature+Summary