These two recent reports by Deloitte seem to fit together like hand and glove.
The first, "Board Leadership: A Global Perspective", describes the emerging trends in various major markets around the world with respect to the roles of CEO, Chairman (split roles or same person? independent Chairman?) and lead directors, etc.
The second, "Fueling the Succession Pipeline, covers the key issues to consider – and process to use – when selecting a successor CEO. The two topics are not unrelated. The type of CEO a board need may be affected by the type of board leadership it uses. The right CEO may affect the leadership process… etc.
Board Leadership (May 2011) http://bdti.mastertree.jp/f/vcxe3zjl
Fueling the Succession Pipeline (April 2001) http://bdti.mastertree.jp/f/ctq3zyjl