Syslinux - Aug 2019 - Latest Testing Version

Hi all,

I wanted to try the latest testing version and wonder which one is.
Because on mirrors.kernel.org the latest available version is 6.04-pre1
but I have also found this mirror which has 6.04-pre3:

https://www.zytor.com/pub/syslinux/Testing/6.04/

Greetings
Marcus