They put a similar post on JeepForum.com back in June. I sent an email to find out more.
The deal was, they keep the Jeep for 2 weeks to "prototype products on your Jeep." After they finish, they give it back stock. About 30-45 days later, when the products go into production, you bring it back and they install their headers and exhaust system at no charge.
It didn't seem to me like such a hot deal, save maybe a grand, but: 1) I loose my new Jeep for TWO WEEKS; 2) you probably sign something that holds them harmless if the Jeep gets scratched, dented, or screwed up in any other way; 3) if DC finds out about the "experimentation," your engine warranty is history; 4) once the headers are on, my dealer would probably use it as an excuse to avoid warranty repairs anyway.
If it was my TJ
, but definately not my brand new KJ.