The probable release date is 8th December 2020. Here is the timeline of this Twenty Twenty One theme project, Per the development cycle information, the upcoming important dates are: ✪ WP 5.6 Beta 1 – October 20 ⭒ Last chance for feature projects and new enhancements ⭒ The theme should be committed to trunk ⭒ Start exploring FSE support in a second, block-based theme ✪ WP 5.6 Beta 4 – November 10Soft string freeze ⭒ Starter content should be committed ✪WP 5.6 RC 1 – November 17Hard string freeze ⭒ Starter content needs to be finalized  WP 5.6 Release – December 8