2014 KCON is going to occur a long way from now. The line-up, date, and location has not been decided. Keep in mind though that the line-up for 2012 and 2013 were totally different. So EXO may or may not come to KCON in 2014, but hopefully they do :)
Because they are in a boyband and have non stop promotions and work as Artists. There's not really much time for school when they're always flying somewhere/on the move. I think later some members might opt to go back but we never know.
why is this year's songs already have in last year individual teasers?are the songs old ? such as baby dont cry .
Because last year they only released those songs in a teaser and it wasn't on their album. We did not hear the full version of those songs and fans demanded it. --hun.