SHINee has been on a roll this year. They've been performing all over the world and filming commercials and mvs, and releasing songs left and right. I guess they want to make sure you don't forget about them as 2013 approaches. SME and EMI Japan have done a good job with that by ensuring they release quality products, and this one is no different. I certainly won't be forgetting about them any time soon.
Take a listen to "The World Where You Exist":