258.0

Released - 30 May, 2017
 * New Weapon: Harpoon Gun (& Tranq Bolts for the Harpoon Gun)
 * New Dino: Hyaenodon
 * New Dino: Hesperornis
 * New Dino: Megatherium
 * New Dino: Megalania
 * New Dino: Yutyrannus
 * New Vehicle: Gas-powered speedy Motorboat
 * New Structure: Interactive Toilet (http://kotaku.com/the-many-kinds-of-poop-in-ark-survival-evolved-1795315471)
 * 2 New Hairstyles
 * Memory reductions, texture memory & mesh optimization.
 * Tek Projectiles now will not do any damage if they collide with a Structure after 5000 units distance (to balance against Auto-Turrets)
 * Greater Achievement set, with various cosmetics, hairstyles, & emotes unlocked as you get Achievements.
 * New client Options to disable giving cosmetics on respawn, and to disable menu music tracks.
 * Re-added the ATV vehicle as work-in-progress "easter egg" for singleplayer and custom servers: Blueprint'/Game/PrimalEarth/Vehicles/VH_Buggy/Blueprint/PrimalItemVHBuggy.PrimalItemVHBuggy'
 * Fixed various gameplay exploits and edge cases.
 * Direwolf now has pack logic with pack buff
 * Fixed bug where Alpha Wild creatures were sometimes improperly buffing enemy (tamed) creatures
 * Updated various new UI's to the new style
 * 66 new Explorer Notes! (between The Island and ScorchedEarth)
 * Ballista/Harpoon Bolt now has significant piercing properties akin to the Composite Arrow
 * Redid The Island's ambient sounds and various gameplay sound effects
 * Explorer Notes subtitle option button, Explorer Notes translations are WIP
 * Various misc map fixes
 * Massive update to Primitive+ (see Primitive+ patch notes here: 1.5 (Primitive Plus))
 * All tamed dinos with projectiles now support "Turret" AI mode

ARK Forum post: Everything You Want To Know About v258

258.0