Slack
You can now connect to Slack and get several different notifications direct in Slack - see What notifications can I get through Slack & Email?
Simplified OKR Creation
The UI to create Objectives, Key Results and Initiatives have been simplified to make it even easy to quickly create them.
There are now 2 views for the Key Result Creation - the simple view is used by default for all users and the Advanced view is available for those needing the more complex Key Result Types - see Using the Advanced View when creating Key Results
Simple Key Result Creation