The Washington Post offers this report. See also this NY Times report, this AP report, this BNA report (paid subscription required), this Roll Call report (paid subscription required), and this report in The Hill. The focus on 527s should not obscure the importance of the changes in the party coordination provisions. As the article in The Hill explains:

House Republican leaders have struck a deal with Sen. John McCain (R-Ariz.) to eliminate restrictions on coordination between national parties and federal candidates, a change in the law that would be of great benefit to the winner of the 2008 GOP presidential primary, according to congressional sources.
Republican and Democratic campaign-finance experts alike believe the change would be a boon to McCain’s campaign, if he wins his party’s nomination in three years, an outcome that political handicappers are beginning to view as a real possibility