I'll throw out the Wikipedia link for albums release in:
2005
2006
2007
So that you can check it out at your leisure.
Here are some of my fav releases of the respective years:
----2005
As I Lay Dying - Shadows Are Security [death metal/metalcore]
Bloodsimple - A Cruel World [nu metal/metalcore]
Burn the Priest - Burn the Priest re-release [death metal/grindcore]
Dark Tranquillity - Character [melodic death metal/Gothenburg]
Disturbed - Ten Thousand Fists [traditional heavy metal/hard rock]
Gojira - The Link re-release [progressive death metal]
Opeth - Ghost Reveries [progressive death metal]
Rammstein - Rosenrot [nu metal/industrial metal]
Roadrunner United - The Allstar Sessions [various; this is a disk featuring past & presetn artists from the Roadrunner label]
Slipknot - 9.0 Live [nu metal w/industrial metal overtones]
Static-X - Start a War [nu metal/industrial metal]
System of a Down - Mesmerize [experimental/progressive hard rock {really, in a league all their own}]
----2006
Amon Amarth - With Oden on Our Side [melodic death metal]
As I Lay Dying - A Long March: The First Recordings re-release/compilation [death metal/metalcore]
Cradle of Filth - Thornography [symphonic "dark" metal; essentually a mix of extreme metal genres & hard to define]
Deicide - The Stench of Redemption [death metal w/ brutal death and speed metal influences]
Demon Hunter - The Triptych [nu metal/metalcore]
DevilDriver - The Fury of Our Maker's Hand [death/groove metal]
Gojira - From Mars to Sirius [progressive death metal]
Lamb of God - New American Gospel re-release [half-thrash w/ death metal/grindcore influences]
Lamb of God - Sacrament [half-thrash/metalcore]
Thine Eyes Bleed - In the Wake of Separation [death/thrash metal]
----2007 (well, thus far)
Dimmu Borgir - In Sorte Diaboli [symphonic black metal]
Finntroll - Ur Jordens Djup [folk/death metal]
Job For a Cowboy - Genesis [death metal w/ grindcore infleunces]
Machine Head - The Blackening [groove metal]
cheers,
--N