Robin Mitchell-Boyask wrote:

>Was there any indication as to when the rest of the biography will come
>out? The series has been a revelation to me.  It has changed the way I
>listen to Mahler.

The answer was given on the Mahler-List.  Vols 2 and 3 are out; 4 is
upcoming, and 1 will be last.

Mitch Friedfeld