You know my methods, Watson

Greenie. An Ubuntu-based distribution that seems to be pretty popular in Slovakia and the Czech Republic, and thus probably a good addition to the GLDT.
Quick googling leads us to the official page and to DistroWatch. The latter hints at a game oriented Xubuntu fork in early 2008, rebasing to Ubuntu in mid-2008.
The official page doesn’t seem to sport any change logs or release announcements (while my Slovak is very poor, this isn’t much of a problem thanks to Google Translate).
The oldest downloads (mirror) seem to have been purged.
The forums also only hold comparatively recent posts.
Googling a bit further reveals that Greenie was known in 2007. Time to power up the Wayback Machine: voilá. Since my Slovak hasn’t improved much in the meantime, lets feed again the earliest archive link to the translator… “The beginning of the project [...] 14th September 2007″ and “Greenie Linux 1.0 is based directly on Ubuntu 7.04 Feisty Fawn.” (on a second look, that page was available in English anyway!)
Job done.

While checking out the page DW links to Greenie, Newtoos catches the eye. The Slovakian Wikipedia says something about it forking off of Ubuntu in Nov 2008.
Researching further, we see that the download ISOs share a common folder. Extracting the URL from the link address, we quickly reveal Newtoos’ release date: 2008.11.13.

If only project sites had a nicely visible change log / history section…
Two distributions for the GLDT 11.7 are done, eight still to go!