Welcome to Turnkey Linux Community Downloads (turnkeylinuxcom)
Official TKL site: http://www.turnkeylinux.org/
It is designed as a place for unofficial ISOs and OVZs (and perhaps other image formats too) created by the community (built from community provided TKLPatches). All the files can be found here. It is hoped that this will provide an opportunity for TKL users to try out appliances that have yet to be released by TKL.
Any issues/bugs etc can either be reported here or posted on the TKL forums or contact Jeremy directly (again via the contact form on the TKL profile page).