Man, has this been a fantastic year for metal. You've got new albums from Mastodon, Isis, Blut Aus Nord, Sunn0))), Kylesa...
And there's still Baroness, Converge, Krallice, and Swallow the Sun to look forward to. Holy headbanging, Batman!
Edit: also Katatonia, apparently. I'm not usually much into them, but Mikael Akerfeldt gave it a glowing recommendation, which is good enough for me.