Details at the link (The Mozilla Blog):

FAQ on CEO Resignation

Over the past few days, we have received a lot of questions and seen a great number of media stories about the events surrounding Brendan Eich’s resignation from the role of CEO. Many of the media stories have incorrect facts, so we compiled the following FAQ as a resource for everyone to have access to the core facts. […]

Q: Was Brendan Eich fired?

A: No, Brendan Eich resigned. […]

Q: Was Brendan asked to resign by the Board?

A: No. […]

Q: Was Brendan Eich forced out by employee pressure?

A: No. […]

Q: Did Board members resign over Brendan’s Prop 8 donation?

A: No. […]

Q: Is Mozilla becoming a social activist organization?

A. No. […]

Q: Is Mozilla pro-gay-marriage?

A. […] The Mozilla Project — which is the overall umbrella for Mozilla’s global community — does not take stands on issues outside the scope of the Mozilla Manifesto.