According to Digital Spy, Aaron has been cast in the new adaptation of a classic UK Sci-Fi series from the 1970's called The Tomorrow People. The premise sounds just like X-Men, and is geared for the CW crowd.
From Digital Spy
Like the original, the new Tomorrow People will follow a team of young people who represent the next stage in human evolution and develop amazing powers. Yoo will play Russell, the team's 'bad boy'. The 33-year-old is best known for his film credits, including roles in 2007's Disturbia, 2008's Nick and Norah's Infinite Playlist and 2009's Friday the 13th. Also cast in the Tomorrow People pilot are Casualty actress Madeleine Mantock, Revenge star Robbie Amell, Mad Men's Peyton List, Home and Away actor Luke Mitchell and Supernatural's Mark Pellegrino. The adaptation has been written by Chuck's Phil Klemmer and is currently under consideration for a series pick-up at The CW
Source: Digital Spy