You're missing out on some cracking albums. Some great ones (off the top of my head)
Kreator - Gods of Violence (favourite of the year as far as metal goes)
Avatarium - Hurricanes and Halos
Battle Beast - Bringer of Pain
Sepultura - Machine Messiah
Crystal Viper - Queen of the Witches
Edguy - Monuments (only five new songs but they're all amazing)
Dagoba - Black Nova
Akercocke - Renaissance in Extremis