Learn Italian: Tra una settimana vedremo il nostro futuro.

Vedere (to see) is an irregular verb in the future tense. Instead of keeping its full stem like regular verbs do, it drops the vowel e to become vedr-. Then we add the standard future ending for 'we', which is -emo, giving us vedremo.

Doesn't tra usually mean 'between' or 'among'? Why is it translated as 'in' here?

You are right that tra (and its identical twin fra) usually means 'between' or 'among' when talking about physical space. But when you use it with a unit of time to talk about an upcoming event, it means 'in' that amount of time. So tra una settimana means 'in a week' from now.

Why is there an il before nostro futuro?

In Italian, possessive words like nostro (our) almost always need a definite article like il or la before them. Because futuro is masculine and singular, it gets il, making it il nostro futuro. A big exception to this rule is singular family members (like 'mio padre'), which don't take the article.

Can futuro mean both the grammar tense and the concept of time, like in English?