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+---
+prelude: |
+    The 2.0.0 release of placement is the first release where placement is
+    available solely from its own project and must be installed separately from
+    nova. If the extracted placement is not already in use, prior to upgrading
+    to Train, the Stein version of placement must be installed. See
+    `Upgrading from Nova to Placement`_ for details.
+
+    2.0.0 adds a suite of features which, combined, enable targeting candidate
+    providers that have complex trees modeling NUMA layouts, multiple devices,
+    and networks where affinity between and grouping among the members of the
+    tree are required. These features will help to enable NFV and other high
+    performance workloads in the cloud.
+
+    Also added is support for forbidden aggregates which allows groups of
+    resource providers to only be used for specific purposes, such as reserving
+    a group of compute nodes for licensed workloads.
+
+    Extensive benchmarking and profiling have led to massive performance
+    enhancements, especially in environments with large numbers of resource
+    providers and high concurrency.
+
+    .. _Upgrading from Nova to Placement: https://docs.openstack.org/placement/latest/upgrade/to-stein.html