The Ideas Conference, the Center for American Progress’s response to CPAC, will be held at the Four Seasons in Georgetown on May 16. Among the speakers: Sens. Elizabeth Warren (D-Mass.), Kirsten Gillibrand (D-N.Y.), Chris Murphy (D-Conn.), Cory Booker (D-N.J.) and Amy Klobuchar (D-Minn.), House Democratic Leader Nancy Pelosi (D-Calif.), and Reps. Adam Schiff (D-Calif.), and Keith Ellison (D-Minn.)
More details can be found here. Think Tank Watch's previous post on the Ideas Conference, which is also being called "CPAC for Liberals," can be found here.
PBS notes that the Democrats' next nominee for president could very well be speaking at the upcoming think tank conference.
Update: A video of the conference as well as a list of all the speakers can be found here.