It is coming...
I am not affiliated with KFX performance, I just volunteered to have the header test fit to my car (2006 Kia Rio) and have a connector pipe made to go from the header to the stock cat.
Part of the hold up was the guy who was originally going to have it test fit could not get a shop in his area to do it since it would require removing the stock pre-cat, even if it is temporary.
So they sent it to me, and I had the new connector pipe made. Now to ship the prototype and mocked mid-pipe to the manufacturer, who will then make the real prototype. Once confirmed that it fits, they should be ready to start cranking them out.
So a couple more weeks, but progress is being made...