Ian Anderson isn't finished with Gerald Bostock, a mythical character whose poetry was said to have inspired Jethro Tull's legendary 1972 prog classic 'Thick as a Brick.'

Of course, back in 2012, Anderson issued 'Thick as a Brick 2,' which imagined what might have become of the same child prodigy, decades on. Now yet another full-length album centering on the fantasy world of Bostock is in the works.

'Homo Erraticus' - a heavier, less folk-inspired project which Anderson is describing as his "next epic voyage into the progressive pock pantheon of strangeness" -- is due via the longtime Jethro Tull frontman's personal imprint Calliandra Records on April 14. A U.K. tour will follow.

As he did with the original 'Thick as a Brick,' Bostock is said to have composed the entirety of this new studio effort, fancifully basing the new songs on an unpublished manuscript by an amateur historian named Ernest T. Parritt.

Anderson will follow the album release with a series of dates that feature 'Home Erraticus' performed in its entirety, along with a selection of Jethro Tull favorites in the show's second half -- "all illustrated and complemented by video and on-stage embellishments from my increasingly theatrically motivated troupe of musical thespians," Anderson adds.