Semilof, Margie. Euthanized Kodiak signals shift for Exchange. SearchExchange.com. May 27, 2004.

This news has been on the street for some time already, but in case you've missed it, the codename "Kodiak" no longer refers to a future release of Exchange per se, but is (at best) being used as a catch-all term for a series of incremental releases in the future past the next major release.