I have just found the WG1 March 2008 publication at the Sedona Conference site. The title is Commentary on ESI Evidence & Admissibility. Have not read it yet.
Maybe there will also be a publication from the Spring Conference (March event):
THE SECOND ANNUAL PROGRAM ON GETTING AHEAD
OF THE eDISCOVERY CURVE: STRATEGIES TO REDUCE
COSTS & MEET JUDICIAL EXPECTATIONS