A couple note worthy album release dates:

Dark Tranquility - Live Damage DVD: September 29 (Euro release date, USA unknown)
Enigma - Voyageur: September 30
Stratovarius - Elements, part 2: October 27
Falconer (just in case you want a good laugh) - Sceptre of Deception: November 4

Confirmed in the studio (late 2003, early 2004 approximate release):
Bal-Sagoth, Rhapsody, Heavenly, Borknagar, Dargaard, Kataklysm