You can expand your Red Dead Redemption experience right now by downloading the Liars and Cheats expansion pack of Xbox Live and PSN. From what I've seen so far it looks like Rockstar want to keep up their tradition of top quality expansion packs after hitting the bullseye twice with the GTA 4 Episodes. I loved Red Dead Redemption and have Liars and Cheats downloading as I write this.

Expect a review in the next week.