2012: A year after CD Projekt Red released The Witcher 2, the studio followed with the Enhanced Edition, an enormous update with the patch notes to prove it. A 102 item changelog detailed everything from corrected item descriptions to "fixed reverb in sewers in Chapter 3," on top of a lengthy list of more substantial additions: new quests, cinematics, and ending sequences. A fledgling CD Projekt had done the same thing with the first Witcher in 2008, and though I can't find it online, I swear I once pored over a multi-page PDF describing every change made to that first adventure. I don't know if any developer is more committed to documenting the minutia of changes to a massive game (other than Bay12 Games with Dwarf Fortress, which is in a league of its own)...
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The Witcher 3's 'next-gen' update polishes an RPG that's aged like a fine Toussaint red
Source: PC Gamer (opens in a new tab)