From Paizo:
In 2010, Pathfinder’s Kingmaker Adventure Path raised the bar on what a tabletop fantasy RPG campaign could be. With open-ended sandbox-style adventures, Kingmaker beckoned players to claim their throne and carve a new nation out of the treacherous River Kingdoms, map hex by map hex. Tens of thousands of gamers answered the call, ranking Kingmaker among the best-known and best-loved tabletop campaigns in history.
Last fall, Owlcat Games released a best-selling computer game adaptation of the Kingmaker campaign, adding new adventures, new mysteries, and more than a dozen new companions to accompany the players as they expand their holdings from a single fortress to a burgeoning empire. A new generation of rulers have schemed and sliced their way to the heights of power in the River Kingdoms, and interest in the Kingmaker campaign has never been higher!
Alas, all six Pathfinder Adventure Path volumes featuring the original Kingmaker campaign are out of print, and have been for years. Assembling a full set of used original volumes and associated accessories can cost hundreds of dollars.
Fortunately, 2020 is the 10th Anniversary of the Kingmaker Adventure Path. Next year is the perfect time to celebrate with a brand new collected and expanded hardcover compilation of the Kingmaker campaign for the second edition of the Pathfinder RPG, along with a little something special for our friends who prefer 5E.