ComicBookMovie has posted several images of Luke Evans as Bard the Bowman on The Hobbit set as he performed a stunt on Laketown set. Assuming he doesn't get an early introduction, the character will probably not show up until The Hobbit: The Desolation of Smaug. Three more images can be found here.

Luke Evans as Bard the Bowman on the Hobbit Set. There are any Luke Evans as Bard the Bowman on the Hobbit Set in here.