Really? There wasn't already an Fable 3 demo? Huh...
Anyway, if you haven't already played the somewhat underwhelming, but still very enjoyable, third entry in Lionhead and Microsoft's Fable franchise; then you might be interested in the new demo. You'll be able to start the revolution and get a little taste of what the full game offers for the grand price of nuttin'.
And only seven months after release- Timely!
Get it here.