A new survey has been released by Sony which teases possible customer incentives for pre-ordering games from the PlayStation Store.
NeoGAF user Wotta posted the survey, which shows the incentives you can get such as single player items, day-one unlocks, in-game currency, and other bonuses such as themes and avatars.
Elsewhere, free games are also mentioned, such as thatgamecompany's flOw and Guerrilla Games' Killzone: Shadow Fall. Other options include extra content releases and early access to betas.
You can find details of the survey on NeoGAF.
Clearly, Sony is trying to encourage people to purchase games through the PlayStation Store and pre-order as well. With limited space on consoles, we may see a 1TB PS4 announced at E3 this June.