This happened to me when I used to rent a small cottage in Newberrytown before moving to Lemoyne.

As long as all your items are gone and you’ve surrendered your keys, the landlord can do whatever they want. Even though you may have paid for X amount of days/ months, you relinquish your rights to the rental property once you no longer have possession of the keys and tell the landlord you’re all moved out. I would reach out to them now about your deposit since they have someone else moving in so quickly because that means that they’ve already inspected the property and deemed it ready for the next tenant.