So, i was wondering about the runes, and i realised that i don′t know anything of their appearance so, how will i identified them?

Yes, that would be interesting. Also I want to know what is that mechanical heart thing. Appearance, purpose and so on. They said that we would carry something like a mechanical heart in order to find magical artifacts.

Didn't they get called 'Whale Bones' earlier on?

I don't know if they're something diferent though.

whale bones and runes are different, whale bones are perks and runes are used to buy powers.

May the hunt for the whale bones begin!

Yes, i remember somethingabot that heart, and the consecuences of using it or something like that

Oh, yes! I want to learn more about that.

Here is some info about the heart:
http://dishonored.wikia.com/wiki/The_Heart

Thanks again for the link. You know, maybe the consequences are those parts from the gameplay trailer we saw, where Corvo saw The Empress lying dead on the floor but in that 'other world'. To me The Heart sounds very interesting. I don't know if it's just flavor text or it really shows what others are thinking and some secrets about the world others can't sense. This is really interesting and makes the story more complex. Can't wait to see it in action!

Yep, pretty much everything has been said so far! We don't know what the runes look like yet, but I'm sure we will know! The Heart is used to locate runes (or something like that) and objectives.

It just gets more interesting. Also details like eating white rats gives you mana really adds depth to the gameplay.