Later today, PSN will receive an update and when that happens, PlayStation Plus members will be able to download Labyrinth Legends free of charge. Developed and published by Creat Studios, Labyrinth Legends is a dungeon crawler that allows players to explore tombs, tunnels and caves in a fantasy-themed world. Additionally, the PlayStation 3 title supports local multiplayer with up to 4 friends.
PlayStation Plus members will also have access to various discounts, including Hot Shots Golf: Out of Bounds Complete Collection for $8.99 and Zombie Driver HD which comes in different packs and bundles.
Source: PlayStation Blog