Duolingo TR from EN versions:

Trees:
v0: 2014-03-12, ?  (Beta)
v0: 2015-03-23, ?  (Beta)
v1: 2015-06-14, ?
v2: ?, 67 Skills (67 Different Lessons)

Paths:
1.0: 2022-09-10, 67 Skills (67 Different Lessons) (43 units)
1.1: 2023-07-02, 67 Skills (67 Different Lessons) (44 units)
1.2: 2023-09-10, 67 Skills (67 Different Lessons) (44 units)
1.3: 2024-05-01, 67 Skills (67 Different Lessons) (76 units)

tree_tr_en_v1_experiment
tree_tr_en_v2_experiment

https://liuch.github.io/duolingo_courses_overview/
https://duolingo.fandom.com/wiki/Course_list
https://duolingodata.com/
https://duolingodata.com/oldtable.html
https://ardslot.com/duolingocrowns.html

Edited by Mat!/Ozone, 2024-05-02.