During interviews in November 2011, Martin Barre stated that there were no current plans for future Jethro Tull work. In 2012, Barre assembled and toured with a group, billed as Martin Barre's New Day, which included Jonathan Noyce that played mostly Tull material. In 2015, Barre stated "It's important that people realize there will never be a Jethro Tull again. There will be two solo bands: the Ian Anderson Band and the Martin Barre Band, and long may they exist, and long may they enjoy playing music. I'm not being pedantic. I always hate to hear, '"Oh, you've left Jethro Tull." I haven't really. Ian wanted to finish Jethro Tull, wanted to stop the band completely."
After Jethro Tull (2012–2017)
On 30 January 2012, Anderson announced via the Jethro Tull website that Thick as a Brick 2: Whatever Happened to Gerald Bostock?, a followup to Thick as a Brick, would be released on 2 April 2012. It was recorded by Anderson and the Ian Anderson Touring Band, who made the following tour together too. There are two former Jethro Tull members bassist David Goodier and keyboardist John O'Hara plus guitarist Florian Opahle, drummer Scott Hammond and as an additional vocalist Ryan O'Donnell. Thick as a Brick 2 had its world premiere on 14 April 2012 at Perth Concert Hall, Scotland, UK, kicking off an expected 18-month tour supporting both the original and new albums.
In November 2013, Anderson announced via the Jethro Tull website that a new album Homo Erraticus ("The Wandering Man") would be released in April 2014. This will be followed by tours in the UK and US, during which the album will be played in its entirety.