I believe that most of you know who this man is, and his popularity in the pixel decorated world of Minecraft. Admit it, most of you that are reading this think of his existence, but all evidence of his existence in Vanilla Minecraft is nothing but a phony. Herobrine was never, ever in any Minecraft update, ever. Any actual images if him is only mods, photoshops, bukkit, etc. Don't bother arguing, because Mojang already confirmed that Herobrine is only a fictional character.
Herobrine inspired Mojang to make multiple jokes about Herobrine, saying in every update that he was getting removed. The truth: it wasn't Herobrine they were removing at all, but it was the Human codes that Mojang was deleting. By Minecraft 1.8 (The Bountiful Update), Jeb put "Removed Herobrine" only as a joke. So, yeah. Herobrine never existed in ANY update whatsoever.
Even though Herobrine is fake, I do enjoy imagining him in Minecraft. Who knows? Maybe Herobrine can be for the good and bad, just use your imagination! Notch actually suggested that Herobrine could be in the next update in this quote,
"Herobrine is not in Minecraft, but he might be!
"
-Notch on: Herobrine
Jeb, however, has no plans on adding Herobrine, so unfortunately there is a VERY small chance of him being featured in another Minecraft update...