Amiga Inc have sold the classic Amiga OS to KMOS

On April 23, 2003 Amiga entered into an Agreement with Itec LLC, later acquired by KMOS, Inc. for the transfer and sale of all of Amiga's right, title, source code, and all versions, from the Classic Amiga Operating System through AmigaOS 4.0 and all subsequent versions to KMOS, Inc.

Yours truely (Ryu) has put up a report from the Big Bash OS4 roadshow, which took place in Peterborough UK, on the 13th of March 2004. You can find it <a href="http://www.ryus-reports.webhop.net">here</a>