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Oslo freezes earlier than other projects in order to give its consumers time to consume any new features that are added before their feature freezes.[0] This adds that date to the release calendar so it is easy to find. Change-Id: I19938bc16629754001f811e4ffe54c555c0833dc 0: https://specs.openstack.org/openstack/oslo-specs/specs/policy/feature-freeze.html