We'll see what happens tomorrow, but this may indeed become a big story (from a USA Today interview):
Hillary Rodham Clinton vowed Wednesday to continue her quest for the Democratic nomination, arguing she would be the stronger nominee because she appeals to a wider coalition of voters — including whites who have not supported Barack Obama in recent contests.
"I have a much broader base to build a winning coalition on," she said in an interview with USA TODAY. As evidence, Clinton cited an Associated Press article "that found how Sen. Obama's support among working, hard-working Americans, white Americans, is weakening again, and how whites in both states who had not completed college were supporting me."
"There's a pattern emerging here," she said. [Italics Mine]
The article describess the "remarks about race" as "blunt." Regardless, this does not seem to be a "unifying" statement.