The Pension Committee of the University of Montreal Pension Plan et al., v. Banc of America Securities, LLC, et al., 2010 WL 184312 (S.D.N.Y.). This decision, by the author of the Zubulake decision, which established several e-discovery standards, is subtitled "Zubulake Revisited: Six Years Later". This is the most important recent decision on e-discovery. We did a short highlight on the case, with a link to the actual opinion, here.
Kevin Brady, a nationally recognized expert on e-discovery, has written a detailed article about the case for the current issue of BNA’s "Digital Discovery & E-Evidence", which is available here.