"Undead Nightmare is what downloadable content should be -- a lot of bang for your buck. There's a whole lot of new here: a 6 hour single-player campaign, two multiplayer modes, two outfits, side missions, weapons, mounts, etc. It's clear that Rockstar didn't skimp on this package, and priced at a cool $10 or 800 Microsoft points, neither should you. There's a lot of fun to be had in this light-hearted version of the West, so if you're craving a well-polished zombie-filled package of fun, here it is."

http://xboxlive.ign.com/articles/113/1130683p1.html

http://ps3.ign.com/objects/080/080424.html

My download has been going for about an hour now, my internet sucks today for some reasons.

I have been waiting for this to release.

Wow great score, will be getting this ASAP.

for a DLC it offers more value than some full priced games, i am so downloading this

Yeah pretty epic. I'm waiting for the retail release though but I'm excited a lot.

I was going to do the same but the multiplayer DLC doesn't interest me, plus if I wanted the bundle it is on PSN for $19.99.

The retail release is $29.99.

Yeah but I don't want to support DLC. I don't mind paying a but higher.

But what is that bundle you're talking about?

Woo... that's quite the score!

Yeah, I'm bugging my brother to get this ASAP. Zombies make everything better. Everything!

Liars and Cheats, Legends and Killers and Undead Nightmare DLC bundle on PSN store. It is the same exact thing as the retail release, only $10 cheaper. 

6 Hour Extra Campaign time?

I'm sold.

Did you know that Bigfoot is in the DLC?!!!

Now since I downloaded the Undead Nightmare DLC the bundle vanished.

I found it by going into "The Halloween Collection", then "Add-Ons".