After the partnership with IBM, Apple is now working with a couple of other firms to get access to the Enterprise market.
MobileIron is one of the leaders in Mobile Device Management. The company is building a product called OneTouch to help large companies deploy apps onto Smartphones and Tablets.
Apple does not provide more information about the cooperation with MobileIron.
Get more information in this Techcrunch article from Alex Wilhelm: http://techcrunch.com/2015/06/16/apple-taps-mobileiron-to-help-it-deploy-ipad-apps-into-the-enterprise/