OES users can now print to their current printers from their mobile devices and Chromebooks in addition to their desktop environment.
Highlights of this release are:
Mobile-Ready: iPrint for OES is ready to process jobs from Mobile devices.
OES 2015 SP1 Maintained Customers
Customers with a current maintenance or subscription plan for OES 2015 SP1 are now able to download the latest version of iPrint for OES by logging onto the Customer Center.
This is quoted from the email that went out. It makes it seem that mobile printing is now an entitlement is you are on maintenance for OES.