AmigaOS 4: Amiga, Operating system, PowerPC, Hyperion Entertainment, Amiga, Inc., AmigaOne, Sam440ep, Motherboard, History of the AmigaOS 4 dispute, AmigaOS ... versions, AmigaOS, Amiga models and variants

AmigaOS 4 is a line of Amiga operating systems which runs on PowerPC microprocessors. It is mainly based on AmigaOS 3.1 source code and some on version 3.9. "The Final Update" was released in 24 December 2006 after five years of development by the Belgian company Hyperion Entertainment under license from Amiga, Inc. for AmigaOne registered users. During the five years of development, users of AmigaOne machines could download Pre-Release versions of AmigaOS 4.0 from Hyperion repository as long as these were made available. As witnessed by many users into Amiga discussion forum sites, these versions were stable and reliable, despite the fact that they were technically labeled as "Pre-Releases".