According to the below post, a company called Hello Cables is claiming to have DB-19s in stock, or at least have 10k pieces "on order". One wonders if that is true or not.
https://groups.google.com/forum/#!topic/comp.sys.apple2/0u8x-KFmkdQ
https://groups.google.com/forum/#!topic/comp.sys.apple2/0u8x-KFmkdQ