Gollancz have confirmed that Joe Abercrombie's next novel will be called A Little Hatred and have a tentative release date of May 2019.
This is the first in a new trilogy in the world of The First Law, set some thirty years after the events of Last Argument of Kings. The story will feature some familiar characters from the first trilogy as well as some new characters and the children of old ones, as, once again, the Union is drawn into a conflict.
Abercrombie is drafting the entire trilogy, having recently completed the second book in the new trilogy, before rewrites and edits before publishing the series. The plan is to get the trilogy out relatively quickly, so expect to see (all being well) the second and third books in this trilogy out in 2020 and 2021.