From Wikipedia:
Vol. 7: Sword-Bound (2013) - Upcoming

For the first time in years, life seems settled for Tiger and Del. Occasionally Tiger must dance against sword-dancers bent on killing him for forsaking the oaths and vows of the circle, but for the most part it’s an idyllic life. Until Tiger’s twenty-five-year-old son accuses him of being “domesticated.” Thus challenged by his own flesh-and-blood to reclaim his legendary status, Tiger, accompanied by Del and his son, embarks on a journey northward that will test his sword skill and resolve, and lead him and Del into the dangerous path of an old enemy.
And Dave Duncan is coming out with a new Seventh Sword novel!

Dangit, I need to find my old copies to reread! Whoada thunk they'd go back to those characters after so long?!