Is this every going to be offered on the psn store? I know this was a pre order dlc bonus but I wanted to know if all the pre order dlc will eventully come out to the public on psn store.
The gods overestimate themselves.
Most likely it will be. The only pre-orders/special offers that aren't public now are Leonidas Armor/Spear and the Mythological Heroes Pack. The last livestream showed a Hammer of Odysseus and a Spear of Achilles, so most people are expecting the Mythological Heroes Pack to be made public along with a Mythological Weapons Pack.
Yeah the others might be the Sword of Perseus(adamant sword, hopefully), and either Hammer or Gauntlet(if they come out) of Orion.