ESPN Plus will launch in Spring 2018, along with a new app for the service.
Following Comcast's exit from the talks to buy Fox assets, Disney looks set to land them, with a deal likely coming later this week.
Murdoch has reportedly asked for Iger to stay on longer as a condition of any sale of Fox assets to Disney.
An analysis valued Fox's regional sports networks at roughly $22 billion.
ESPN can tap heavily into the resources of the Fox Sports Nets if parent company Disney closes the deal with 21st Century Fox.
Comcast, Sony and Verizon are also pursuing 21st Century Fox
Talks are ongoing between Comcast and 21st Century Fox about a sale of Fox assets outside the U.S. news and sports realms.
If Disney obtains Fox, it would gain the company’s European and Asian sports networks.
Fox selling entertainment properties to Disney to focus on news and sports could have big implications for both companies.
"The key near term headwinds are soft NFL ratings and the risk that the Sky transaction is blocked by UK regulators."