I have never seen a shred of show-related material that said it was, and only people saying it's not. Which is why I'm trying to chase down this idea it is to a source. If I can find that, I'll correct myself, but I've seen nothing but "I think" and "it seems" so far. The premises have been stated to be explicitly different¹, and I'm not sure why people are drawing such bold lines between them.

¹: Guns, for starters.

I think the credits read "Created by Eric Kripke," which would mean it's not based on any underlying source material.

Kristen, I just had the worst argument with someone who said the Teen Wolf show wasn't based on the movie, and I couldn't tell him that neither of us got a vote here. It's not following many of the plot points, but then again, neither does Buffy, really. It does share an elevator pitch and some character names, but legally, it's the same property. They took the concept, ran with it, and tossed out easter eggs as he went.

But this guy lives to argue, and first said they weren't related, and I think his final reply that I'm not reading because I am seriously out of the conversation is that the legal relationship and sharing an elevator pitch and character names isn't enough. Again--the IO9 article had tons of TV shows that don't really resemble the movies (they're certainly not both canon), so he has a bug up his ass probably created by teenagers enjoying the show + the idea of getting my goat.

Pfft.

Puny humans.

Casting call for hot, fit, identical male twins for Teen Wolf (ALPHAS, BEEYOTCHES): [link]

There's also a side there:

INT. HIGH SCHOOL/LOCKER ROOM - DAY
Among the students change for gym class, Ethan takes a seat
next to his brother, Aiden, at one of the locker benches.
ETHAN
You’re starting to like her.
AIDEN
How would you know?
ETHAN
Your eyes dilate when you look at
her.
AIDEN
My eyes what?
ETHAN
Dilate. It’s a marker for sexual
attraction.
AIDEN
Where do you even read this crap?
ETHAN
Norepinephrine secreted during
attraction flexes the dilator
muscles--
AIDEN
Okay, shut up. It’s bad enough I’m
back in eight hours a day of high
school. I don’t need a Chemistry
lesson from my brother.
ETHAN
Biology.
AIDEN
Whatever.
ETHAN
You’re not supposed to like her.
AIDEN
So what if I do?
ETHAN
Then you’re an idiot. Because if
this all goes the way we think it’s
going, we’re going to have to kill
her.
And it’s not going to be push her
down a flight of stairs kill her.
It’s going to be claw out her
throat and watch a geyser of blood
stream out of her neck kill her.
You ready for that?
Aiden holds still a moment, considering it. Then turns to his
brother with as cold-hearted a stare as he can manage.
AIDEN
If I have to... I’ll rip her pretty
little head off.

Teen Wolf: No more Jackson? Contract negotiations failed and apparently, Colton Haynes will nto be back in season 3.

Derek better get someone out to fix the plumbing in his burned-down house stat then, because someone's going to have to take up the slack for all the naked shower scenes.

I saw some shirtless Dylan O'Brien the other day. Methinks the days of Stiles changing behind Scott need to come to an end.

I wonder if he has tats that need to be painted over too?

Grandpa Winchester.

So word from Colin is that Misha will be in S9, but not a regular.

Tor.com discusses how they think that GoT will split A Storm of Swords.