Bob Dylan’s still at, a long way from hanging up his guitar or microphone.  Timed to mark his 50th anniversary as a recording artist, Columbia Records has announced on www.bobdylan.com that in September Bob Dylan will be releasing a new album, “Tempest.” Columbia writes that it will feature “ten new and original Bob Dylan songs,” and that its “release. . . coincides with the 50th Anniversary of the artist’s eponymous debut album, which was released by Columbia in 1962.”