Not sure about that manufacturer, but it will depend on whether they make their juices to order or in batches. (And then will depend on what flavours as to how long they need to steep for)
Fruit flavours take the shortest time, custards etc take the longest time to steep.
Obviously it will steep on its way, as time is a factor in the steeping process, but might not reach maturity for another few weeks.
I have ordered from Nicoticket and their juices need at least a month of steeping despite being made in batches.
Usually the bigger the bottle the longer it takes to steep too.