Here it is, straight from the Heroes of Ruin website. Looks like NA will get the demo at a later date.

"HEROES OF RUIN DEMO OUT IN EUROPE THIS WEEK

Demo available from Nintendo 3DS eShop tomorrow

6th June 2012

Do you have what it takes to be a hero? We’re not talking about just any old hero either, but a Hero of Ruin? Well, wonder no longer - from tomorrow you will be able to find out for yourselves when the Heroes Of Ruin demo launches on the Nintendo 3DS eShop in Europe.

Not had a chance to go to E3 2012 and feel like you’re missing out? Not to worry, we’ve got you covered – the demo on the eShop has the exact same content as that which E3 attendees will be getting to play on the show floor.

The demo gives you two classes to choose from, the wily Gunslinger and the noble Vindicator, both of which you’ll be able to customize to your heart’s content. However, to quote some venerable ancient wisdom, “it’s dangerous to go alone!” so we hope you’ll be pleased to hear that the demo supports drop in/drop out co-op multiplayer over both Local and WiFi for up to four players.

The demo’s quest takes place within the Elder Forest, so called from ancient times when the spectral Elders of the forest called this area home. Whether you have your Hero rush forwards to meet their destiny, or go off the beaten path and engage in side-quests, all depends on your play style as an adventurer in the world of Veil.

We’ll be posting some helpful hints for the European demo later on this week and we’ll be sharing more information about the North American demo at a later date."