Read the official Contao announcements.
TYPOlight 2.6.5 is available
by Leo Feyer – Announcements
TYPOlight version 2.6.5 is available. The maintenance release fixes a few bugs related to the new SEO-friendly image cache and the lightbox script, which basically affect all image files containing special characters.
Find out what has been done
You can check out all tickets belonging to the new version here.
Download this release from github.com.