Improved To-do layout in OKR details
The To-dos links to an OKR are now displayed in a separate list, with a timeline showing the due and completed dates. The order of the initiatives can be changed by dragging them into a new order.
The original layout can used by changing the setting in User Settings

Retrospective Notifications
Notifications are now sent when there are outstanding retrospectives - see What notifications can I get through Slack, Microsoft Teams & Email?