I found an article on the release of Season Three on DVD

Twentieth Century Fox Home Entertainment just announced that Bones’ season 3 DVD will be available a little more than a month from now on November 18. The comprehensive five-disc package will contain all 15 full-hour episodes plus four bonus episodes from Season Four (by the time it gets out, all four episodes would’ve aired already anyway).

As DVDs go, however, this package will include some nifty features, such as three extended episodes, a gag reel, an extended kissing scene between Bones and Booth (in “The Santa in the Slush”), and director’s takes. Like all those before it, Bones Season 3 DVD is presented in wide screen with English 5.1 Dolby Surround Sound with either English, French, or Spanish subtitles.