Learn Italian: Fra un anno saprò il mio vero destino. - In a year I will know my true destiny.

saprò is the "I" form of the future tense of sapere (to know). Sapere is an irregular verb in the future tense: it drops the "e" from its stem. So, instead of the regular pattern which would give us "saperò", the stem shrinks to sapr- and we just add the future ending -ò to get saprò.

Why does fra mean "in" here? Doesn't it usually mean "between" or "among"?

Yes, fra (and its twin word tra) means "between" for physical locations. But when used with a chunk of time in the future, like un anno (a year), it translates to "in". It points forward to when the action will happen, so fra un anno means "in a year".

Why is the adjective vero placed before the noun destino?

While most descriptive adjectives in Italian go after the noun, some common ones like vero (true/real), bello (beautiful), and bravo (good) often go before it. Placing vero before destino here gives it a bit more emphasis and sounds more natural.

Why do we need the article il in il mio vero destino? In English we just say "my true destiny".