There are actually quite a few big anniversaries this year. I'm assuming The Thing is the one you're referring to.
On top of that, the 40th anniversaries are the original Evil Dead, Halloween 3, Friday 3 (that likely won't happen), and Poltergeist (could we see the return of a fan favorite this soon)?
35th anniversaries are Lost Boys, and Nightmare 3, and...Evil Dead 2.
30th anniversaries are Candyman, Dracula, and...Army of Darkness (hey...wait a minute!)