According to Rending of Falcons, the Jade Falcon Occupation zone is now known as "The Falcon's Reach." So it isn't a planet, but the entire OZ.
Of course, there are parts in it that suggest that the "The Falcon's Reach" might just be the planets taking during the attacks during the 3130's and 40's, but its hard to tell (for instance, one of the chapters that takes place on Sudeten doesn't have "The Falcon's Reach" label).
So its either the entire OZ, or everything that they've taken from their original OZ during the 3130's and 3140's.