From a Joint Ingram and EBL Announcement:
Through the alliance with EBL, Ingram will add more than 325,000 EBL e-book titles to the OASIS platform, substantially growing the selection of e-content available to libraries. Users of the OASIS platform can view and select from an expanded selection of e-books alongside print books, with no changes to existing and preferred workflows. Billing will be consolidated, offering libraries integrated acquisition services and invoicing for all EBL content.
Ingram and EBL will be rolling out this new service “as soon as possible”.