The first paid expansion for The Witcher 3: Wild Hunt, called Hearts of Stone, is closing in on its October release date. Now, developer CD Projekt Red has provided an update on its development.

Speaking at PAX Prime, CD Projekt Red's Travis Currit said Hearts of Stone is “almost ready, and shaping up really nicely," as reported by DualShockers. Hearts of Stone launches sometime in October and will introduce about 10 hours of new content to the game.

Hearts of Stone sees players venturing into an area called "No Man's Land" and another location called Oxenfurt. Here, players will take on a quest from the "mysterious Man of Glass."

"Caught in a thick tangle of deceit, Geralt will need all his cunning and strength to solve the mystery and emerge unscathed," CD Projekt Red said about the content.

Promotional art for Hearts of Stone appears to show the character Shani from the original Witcher. The red-haired woman is referenced in The Witcher 3, but never makes an appearance--perhaps that is soon to change.

Also during PAX Prime, Currit talked about The Witcher 3's popular in-game card game, Gwent. Asked if CD Projekt Red might consider releasing a standalone version, he said he would relay this feedback to the development team in Poland. But he also teased that the studio has some "good news" in the pipeline for Gwent fans.

Looking beyond Hearts of Stone, CD Projekt Red will release The Witcher 3's second paid expansion, Blood and Wine, before April 2016. The expansions will be sold together through the $25 Witcher 3 Expansion Pass, though individual pricing has not been announced.

In other recent news about The Witcher 3, the game has now sold more than 6 million copies.