From Polaris:
Polaris Library Systems will employ OverDrive’s Discovery APIs and Circulation APIs (application programming interfaces) to create a more desirable, seamless patron experience for libraries with an OverDrive e-content subscription.
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The integration between Polaris and OverDrive will be available for both the library catalog and mobile PAC in Q1 of 2014.
Read the Complete Announcement
From April: Polaris ILS, Axis 360 to Integrate Ebook Access (via The Digital Shift)
From 2012: 3M Cloud Library and Polaris Library Systems Announce Industry’s First Fully Integrated eBook Catalog