The significance of the email seems to be that whomever leaked the inaccurate information earlier this month did so in a way that made it appear that the White House - specifically deputy National Security Adviser for Strategic Communications Ben Rhodes - was more interested in the State Department's desire to remove mentions to specific terrorist groups and warnings about these groups so as to not bring criticism to the Department than Rhodes' email actually stated.
In the email sent on Friday, September 14, 2012, at 9:34 p.m., obtained by CNN from a U.S. government source, Rhodes wrote:
“All –
“Sorry to be late to this discussion. We need to resolve this in a way that respects all of the relevant equities, particularly the investigation.
“There is a ton of wrong information getting out into the public domain from Congress and people who are not particularly informed. Insofar as we have firmed up assessments that don’t compromise intel or the investigation, we need to have the capability to correct the record, as there are significant policy and messaging ramifications that would flow from a hardened mis-impression.
“We can take this up tomorrow morning at deputies.”
http://www.cnn.com/interactive/2013/05/politics/white-house-benghazi-email/index.html