Ok, I confess/  Totally clueless here.  We are actually heading down to Orlando later today.  Thought we might do a day at Universal to see the new Harry Potter area.  We went a year ago in Jan, just to IOA. 
Can someone explain the Hogwarts train new area thing?  It's sounding to me that it's a bit more than just another attraction in IOA?  We were just going to do one day.