YES IT ABSOLUTELY DOES! Do not believe the others. I rented Batman Arkham Asylum for PS3 and received the GOTY edition. I actually ended up buying it from them. I also bought Medal of Honor Limited Edition from the as well which came with an EA Online Passcode for extra skins and other stuff.
My guess is rent it first and when you get it check the disc, it might very well be LE or GOTY edition. you just have to wait til you get the game in the mail.
GameFly's versions can be both limited and standard. You would have to wait and see which one comes in the mail. The prices will be refelcted once you receive it. If you notice, your keep it price is blank or standard at 59.99. Limited editions are higher in price but once you receive the game GameFly will update your queue with the correct price for the version of the game you were shipped.
There are two ways you can do this. One is to join a coop game online or locally with another PS3 and trade with a player that has a gun in their inventory. Second is to survive all the way to the city and there are guns hidden in cases and/or you can get them off of dead humans that you kill or are already killed =)
Yes. Make sure that when your friend plays on your system that you choose NEW or PLAY. Once you choose PLAY (NEW GAME) you can choose any character. It will save them separately from your original game. Whenever you want to go back to your original game that YOU played just go to PLAY from the main menu and choose your character from the list. Make sure it is your character by double checking the stats provided on the right side of the screen.
Currently there is no SPLIT SCREEN support for Dead Island. However, if you both have the game and both have PS3s and both have TVs then you can do either a LAN coop session or a PSN online network session.