You can download these new versions at http://www.apachefriends.org/download.html.
Download any version
Windows - https://sourceforge.net/projects/xampp/files/XAMPP%20Windows/
Linux (Ubuntu) - https://sourceforge.net/projects/xampp/files/XAMPP%20Linux/
Mac OS - https://sourceforge.net/projects/xampp/files/XAMPP%20Mac%20OS%20X/