Lenovo Restocks - What does “Available Soon” mean and how long is it usually before a product is fully restocked once it says “available soon”?

Lenovo Restocks -

It took almost a whole week for an item I am trying to buy to go from “out of stock” to “Available Soon”….

What does “Available Soon” mean and how long is it usually before a product is fully restocked once it says “available soon”?