Actor Orlando Bloom, who played Legolas in The Lord of the Rings triology, has said that he would like to return in The Hobbit. When interviewed at the 2010 Sundance Film Festival by MTV, he said that he has approached producer Peter Jackson about possibility to return:

You know, if you want me to wear the blonde wig [...]

We’ve got a opportunity that we can’t spend! It’s your (and our) time to visit New Zealand, for the premiere event of “The Hobbit”, and to be in the *Red Carpet*!
Vic & Raewyn James from Red Carpet Tours, send this along: Red Carpet Tours is pleased to announce that it has opened a register for [...]

In a new interview with Crave Online, Guillermo Del Toro talked briefly about the upcoming Hobbit movie:
Crave Online: I know it’s too early to talk casting, but doesn’t James McAvoy sound like a good idea right about now?
Guillermo del Toro: Really, if I was to answer either way, it would be unfair because I will [...]