According to this article, the rumours about "the date" being pushed back are true.
"We are in due diligence and contract negotiations to decide what really gets outsourced, who gets rebadged, what happens, where will the investments be made," NiSource Chairman and Chief Executive Officer Gary Neale told shareholders at the company's annual meeting in Pittsburgh on Tuesday.
By mid-June, NiSource should be announcing some details of the plans, Neale said.