An early release over the weekend took any surprise out of the news, but now TiVo has officially announced its plans for the new TiVo Premiere Q and TiVo Preview set-top boxes and an update for its iPad app at the 2011 NCTA Cable Show. Both boxes are firsts for TiVo, the Premiere Q (pictured above) because it has four tuners and can stream video to up to three other boxes in the home, and the Preview because it lacks a hard drive or any DVR capabilities entirely. The Preview can function on its own or as a