Open edX developers! We just created the open-release/olive.master branch in 44 Open edX repositories. 
THESE BRANCHES ARE NOT FOR PUBLIC CONSUMPTION They are only meant to provide a first reference point for developers and contributors, notably the Build/Test/Release working group, who want to help build Olive, the next release of Open edX.
Please report any issues that you find by opening an issue on the Build/Test/Release Working Group board.
For reference, here is the full list of repos in which we created a branch today:
edx/edx-e2e-tests
edx/testeng-ci
edx/frontend-app-ora-grading
edx/frontend-app-communications
edx/enterprise-access
edx/frontend-app-learner-dashboard
openedx/cs_comments_service
openedx/xqueue
openedx/configuration
openedx/edx-platform
openedx/openedx-demo-course
openedx/repo-tools
openedx/edx-analytics-data-api
openedx/edx-analytics-dashboard
openedx/edx-analytics-configuration
openedx/edx-analytics-pipeline
openedx/edx-documentation
openedx/edx-notes-api
openedx/edx-app-ios
openedx/edx-app-android
openedx/ecommerce
openedx/ecommerce-worker
openedx/course-discovery
openedx/credentials
openedx/tubular
openedx/devstack
openedx/frontend-template-application
openedx/blockstore
openedx/edx-developer-docs
openedx/frontend-app-gradebook
openedx/frontend-app-publisher
openedx/frontend-app-profile
openedx/frontend-app-ecommerce
openedx/frontend-app-account
openedx/frontend-app-learning
openedx/frontend-app-payment
openedx/enterprise-catalog
openedx/frontend-app-support-tools
openedx/license-manager
openedx/frontend-app-course-authoring
openedx/frontend-app-authn
openedx/frontend-app-learner-record
openedx/docs.openedx.org
openedx/openedx-test-course
Happy hacking!