Politico's Michael Calderone has this:
Hillary Clinton will appear in a live town hall meeting Sunday on ABC's "This Week with George Stephanopoulos."
Just two days before the primaries, ABC's town hall event will be broadcast live from Indiana, and also include viewer questions from North Carolina. "This Week" host Stephanopoulos is moderating.
ABC News has also extended offers to both Sen. Barack Obama and John McCain, according to a network spokesperson.
(This post was updated after the network confirmed my original source).