From PoliticsUSA:
Sen. Elizabeth Warren’s advisers are in communication with the Hillary Clinton campaign, and it is likely that Warren will endorse Clinton at some point after the Democratic primaries end.
The Washington Post reported:
Perhaps the biggest sign that a new effort is underway among liberals to begin healing fissures within the party comes from Sen. Elizabeth Warren (D-Mass.), the heroine of the left. Although Warren still has not endorsed Clinton — and remains the lone Democratic woman in the Senate not to do so — she has stepped up her attacks on Trump, and her advisers have begun communicating regularly with the Clinton campaign.
“We are in regular contact with her team and are very excited about the prominent role she has taken in defining what’s at stake in the election,” said Clinton spokesman Brian Fallon. Both sides continued to insist that there is no formal coordination — and most likely, no endorsement by Warren until after the last round of primaries.