This came from Ain't It Cool News...

Ryan Phillipe, Colin Hanks and Hayden Christensen.... all in STAR WARS EPISODE TWO
Hey folks, Harry here with still more on STAR WARS EPISODE ONE. I've gotten confirmations out the wazoo on Ryan Phillipe as Bail Organa now, and on Hayden Christensen as Anakin Skywalker. THese are absolutes right now. However I've also been getting from some of these same people a report that Colin Hanks is on board as Kister, and this was apparently who he was really up for all along. Turns out that Lucas was using the Anakin casting call as the big ol recruitment call for all his young men of EPISODE TWO.

And this came from SandyEggo

WHO WILL BE ANNAKIN?: With a start date drawing near for George Lucas to
launch production of "Star Wars: Episode II," Daily Variety reports that
the buzz in Hollywood is that Lucas is close to naming an actor to play
Annakin Skywalker as a young man. And that actor is -- or is reported to be
-- Hayden Christensen, whose credits include roles on the Fox Family
Channel series "Higher Ground" and a recent TV movie, "Trapped in a Purple
Haze." Natalie Portman, Ewan McGregor and Samuel L. Jackson will return for
the second installment of the trilogy -- which is actually a prequel to the
trilogy of "Star Wars" pictures that Lucas made in the 1970s and '80s.