WASHINGTON — Donald Trump is releasing another book.

The untitled book comes out Oct. 27, the day before the next Republican debate in Boulder, Colo.

“Work on my new best-seller is almost done,” Trump said Monday.

“Not since ‘The Art of the Deal’ have I had this much fun writing a book,” he added, referring to his 1987 best-seller.

Meanwhile, Trump continued to bash rival Carly Fiorina, claiming she “says the same thing over and over and over.”