Is A Dance with Dragons the same book as The Winds of Winter?

No, A Dance with Dragons and The Winds of Winter are not the same book.

* A Dance with Dragons is the fifth book in the *A Song of Ice and Fire* series by George R. R. Martin, published in 2011.

* The Winds of Winter is the sixth book in the series, which is still unfinished and unreleased.

While *A Dance with Dragons* ends on a cliffhanger, *The Winds of Winter* is intended to continue the story directly from where the previous book left off.