http://en.wikipedia.org/wiki/Rome_(TV_series)
After the broadcast of only three first season episodes, HBO announced plans to produce a second season of Rome in 2006 for release in March 2007[3]. Subsequently in a news conference HBO Chairman Chris Albrecht confirmed that Rome season two would air on HBO in January 2007, but would not return for a third season[4]. Most speculation for the early denial of a third season appears to center on the series' staggering costs, although neither Albrecht, cast members, or any HBO representative will comment on this speculation. The second season premiered January 14, 2007 in the US. It is expected to be shown in the UK in April 2007; the BBC is still to confirm this.
The first episode of season 2 attracted 1.5 million viewers.