The New York Times' Brian Stelter writes today that In The Arena is cancelled beginning August 8. Anderson Cooper's AC360° moves into that 8 PM ET timeslot and coming in late September, John King USA moves to 6 PM ET and Erin Burnett's show will start at 7 PM ET.

An internal memo from Ken Jautz obtained by Stelter:

Beginning August 8, we will broadcast AC360, our flagship news program, at 8p and 10p. Then in late September, we will add Erin Burnett’s new show at 7p and 11p. Piers Morgan will continue at 9p and midnight, while JKUSA and the Situation Room will both be broadcast one hour earlier, at 6p and 4p, respectively.

This line-up emphasizes our focus on quality journalism and on hosts who are proven reporters, as well as on shows that successfully combine original reporting with news analysis, civil debate and a wide range of inclusive and differing opinions.

The CNN brand and business model thrive on high-quality journalism that resonates across multiple platforms. Over the last six months, we have broadened the range and depth of our reporting and added more analysis and opinion to our coverage to complement our reporting. The tone, quality and credibility of our journalism is what continues to set CNN apart and contributes to the growth and success of CNN Worldwide.

We are in discussions with Eliot Spitzer about an alternative role. We thank him and the entire In the Arena team for creating a program that moved many political and economic issues into the national spotlight.