Spreading out freshly laundered bed linen during the nine days is prohibited; one may not even change tablecloths or towels, unless they have become soiled (“Summary of the Halachos of the Three Weeks” by Rav Shimon Eider, pg 10)
WIY: Are you sure? I would think that towels are more like underwear, which is Muttar to wear freshly laundered (but not Muttar to wash) during the nine days.