It means the PS3 dev kits that Sony distributed to developers came with a limited version of Unreal Engine 3. It's sort of like how when you buy a computer from Dell or Gateway, they have a Windows OS on them. The PS3 dev kits had evaluation versions of Unreal Engine 3.
Threads of Interest:
The Movie Thread: http://www.vgchartz.com/forum/thread.php?id=6880
The Crow Eating Thread: http://www.vgchartz.com/forum/thread.php?start=0&id=3886
The Betting Thread: http://www.vgchartz.com/forum/thread.php?start=0&id=7104
Custom GIFs Thread: http://www.vgchartz.com/forum/thread.php?id=18963
The Greatest Game Ever Conceived On Any Platform
Tag: "I have tasted Obi-Wan's bitter tears"