|  | :orphan: | 
|  |  | 
|  | .. _zephyr_release_notes: | 
|  |  | 
|  | Release Notes | 
|  | ############# | 
|  |  | 
|  | Zephyr project is provided as source code and build scripts for different | 
|  | target architectures and configurations, and not as a binary image. Updated | 
|  | versions of the Zephyr project are released approximately every three-months. | 
|  |  | 
|  | All Zephyr project source code is maintained in a GitHub repository; you can | 
|  | either download source as a tar.gz file (see the bottom of the GitHub release | 
|  | notes pages listed below), or use Git clone and checkout commands, such as: | 
|  |  | 
|  | .. code-block:: shell | 
|  |  | 
|  | git clone https://github.com/zephyrproject-rtos/zephyr | 
|  | cd zephyr | 
|  | git checkout tags/v1.9.0 | 
|  |  | 
|  |  | 
|  | The project's technical documentation is also tagged to correspond with a | 
|  | specific release and can be found at https://www.zephyrproject.org/doc/. | 
|  |  | 
|  | Zephyr Kernel Releases | 
|  | ********************** | 
|  |  | 
|  | .. toctree:: | 
|  | :maxdepth: 1 | 
|  |  | 
|  | release-notes-1.9 | 
|  | release-notes-1.8 | 
|  | release-notes-1.7 | 
|  | release-notes-1.6 | 
|  | release-notes-1.5 |