Large, it's a term-of-art in bankruptcy cases. The effect of executing an approved 'Plan of Reorganization' is to cause a "New" company to become in existence, shedding all the baggage of the "Old" company.
{That's also why new securities are issued as well.}
Of course, it's a reorganized company, by definition.
But "NewCo" is the normal shorthand used, as opposed to "OldCo" (the current company).
It's normal bankruptcy terminology.
....Catz