The Scrolls website has details on plans to officially launch Mojang's card-based strategy game today. They offer the game's official launch trailer, warn to expect a demo, and say they are also cutting the game's price:

We’re also releasing Scrolls on Android tablets, offering a free demo version, and reducing the price of the full game to $5. That’s remarkably cheap when you think about it.

An iPad version of Scrolls is also on the way, but it won’t arrive until some time in the new year. Sorry for the delay, but putting games on the App Store is serious business.