From MyFamilyLaw.com Celebrity Blog:

Director Cameron Crowe and his wife, Nancy Wilson, filed divorce papers this week in Los Angeles. Wilson, a member of the rock band Heart since 1974, technically filed the divorce petition (available at TMZ.com) but it appears to be a collaborative divorce in which both parties have worked together to settle all related matters prior to filing in court.

Our guess is that Wilson and Crowe, quite admirably and maturely, were able to spend the time since their separation discussing and mediating how best to handle the custody of their children and division of their substantial marital assets.