Looks like WaPo's Chris Cillizza, on The Fix, is the first to report that White House Communications Director Anita Dunn will step down at the end of this month, to be replaced by her deputy Dan Pfeiffer. Cillizza's reporting:

Dunn, a longtime Democratic media consultant, took over the job on an interim basis earlier this year when Ellen Moran abruptly left the post to take a job at the Commerce Department. Dunn will remain as a consultant to the White House on the communications and strategic ends.

Pfeiffer began working for Obama in 2007 following Sen. Evan Bayh's (Ind.) decision not to pursue the presidency. He served a stint as the traveling press secretary for Obama's presidential bid but eventually took a slot overseeing the campaign's communications operation.

Prior to Obama, Pfeiffer worked for Sen. Tim Johnson's (S.D.) re-election race in 2002 and on then Sen. Tom Daschle's (S.D.) unsuccessful bid in 2004.