Check all the enhancements that were added in 2020 Release wave 1 in Timeline control https://nishantrana.me/2020/02/25/rich-notes-and-filter-enhancements-in-dynamics-365-timeline-control-2020-release-wave-1/
Below are some of the new features added in 2020 Release wave 2
Enable early access to 2020 release wave 2
Check other posts on Release 2020 Wave 2
- Expand and collapse records in timeline
All records expanded inside timeline control shows its content and the icons to perform action on them.
In 2020 Release wave 1, the option is not available
- Enhancements related to Email within timeline control
- Highlight of matching text for the search
Dynamics 365 2020 release wave 2 –https://docs.microsoft.com/en-us/dynamics365-release-plan/2020wave2/
Hope it helps..