Christopher Hitchens' last book

Publication of Mortality has been delayed until September, according to publishers:

Atlantic Books publicist Karen Duffy said the move, initiated in the US, would enable simultaneous publication for the book in the UK, US and Australia, and ensure that any additional material needed in the wake of Hitchens' death, such as a new introduction, was in place. 

If it hasn't somehow made it to your browser or inbox yet, Hitchens' last column for Vanity Fair is here; reflections on his life from Salman Rushdie and Graydon Carter here and here.