probably not what he meant by "promised land"

The New Orleans Saints having been eliminated, the sports media covering the Super Bowl has decided the "sports are more important than they really are" storyline will center around the head coaches of the competing teams who are both black. ESPN.com's subhead:

Thirty-nine years after Martin Luther King Jr. imagined the Promised Land, two black NFL coaches got there.

Really? Two black guys coaching the Super Bowl is what Dr. King was talking about? Really?