J.K. Rowling's book The Casual Vacancy is being adapted into a miniseries by the BBC/HBO. Variety reported that the show "will comprise three one-hour parts, with production slated to begin July 7 in South West England."
With respect to her post-Potter books, I prefer The Cuckoo's Calling over The Casual Vacancy and think Cuckoo would be a better miniseries. But then again, I am not a t.v. executive.