That promised (opens in new tab) Dota 2 "major balance update" is in testing, and as the patch notes (opens in new tab) reveal, it's a doozy. It's probably too early to tell whether it will change the dotes in any significant ways, but the community has uncovered a reference to the much-missed Terry Pratchett in the meantime.
One of Dota 2's new endgame items is called the Octarine Core, an object "formed from Mystic Staff and Soul Booster" that reduces all cooldowns by 25%, and bolsters intelligence, HP, mana and some other bits. Octarine, you might be aware, is the colour of magic, as seen in Terry Pratchett's 'The Colour of Magic'. It is not the name of a fruit; you're thinking of pineapples.
It isn't the first game to smuggle in a reference to the author—Elite: Dangerous recently honored Pratchett with the addition of a new starport named Pratchett's Disc.
Correction: The patch is now available in the Dota 2 Test client; not live in the game.