I swear I'm one of the only guys not disappointed by the new dredg album. I dig it, a lot.
As for disappointing albums, and by that I mean albums that I was hoping would be good and turned to shit, not ones that I knew were already going to be bad (Lulu, Dedicated To Chaos for example)
The Haunted: UnseenOne of the finest Swedish Metal bands turned into a Nickelback/Five Finger Donkey Punch tribute band. So sad, so pathetic.
Morbid Angel: Illud Divinum InsanusThere were a couple great songs on this, but the rest....what the fuck? I don't wanna hear Dubstep and Industrial music in my classic Death Metal.
Children Of Bodom- Relentless Reckless ForeverAnother band that has been going downhill for a very long time. I played this album once before I never touched it again. I even left during their their headlining set in July....to be fair I was hanging out with Devin Townsend during their set. but my point still stands.
Protest The Hero- Scurrilous I think I just grew out of these guys. When Kezia came out I was smileing all over the place about these guys. Since then, It's been really "Meh". Hell I even went to see them Wednesday night (And again to be fair I was really there to see Scale The Summit and Last Chance TO Reason* but live, everyone else was going apeshit for them. I was left unimpressed.
All other albums I've heard this year I have enjoyed, or loved.