Critical functional and security fixes have been incorporated in the latest release. All customers that are not currently operating on 15B.2 or above are encouraged to request the latest release as soon as possible.
Many exciting features have been incorporated in 15B which you can leverage.
Release Readiness information such as release notes, feature presentations, tutorials and other resources are available at:
Upgrade policies and release life-cycle status can be found in My Oracle Support document 1603034.1.
Request your upgrade to the latest release by creating a Service Request via My Oracle Support. If you are not operating on 15B.2 or higher by June 2017, your staging and production upgrades will be scheduled in July through September 2017. If you use Sourcing 15A, it will also be upgraded to the latest 15B release.
Please note that customers were notified via GCN-00244 sent February 15, 2017