Garth Nix’s Lord Sunday, the final book in the Keys to the Kingdom series, now has a solid release date: March 4th, 2010 in the U.S. and U.K., or sometime in February for Australia.

LORD SUNDAY is the breathtaking conclusion to The Keys to the Kingdom series. In this, the seventh and final book, the mysteries of the House, the Architect, the Trustees, the Keys and the Will are all revealed, and the fate of Arthur, our Earth, and the entire Universe is finally decided.

So, to all of you who have been impatiently waiting for this book: the wait is nearly over.