Official NCSoft Staff from PM (from Innova EU)
They call it 2.0 (Saviors / Zaken / Antharas wtv) but for internal understanding between their group they use the 0.1, 0.2, 0.3 to specify the version inside their repo as (1st, 2nd, 3rd, etc patch versions for the main 2.0 version)
2.5, 2.8, 3.0 and so on it's from Korean repo