...
- MS Windows users: QGIS 2.8 (32 bit) - or - QGIS 2.8 (64 bit)
- MAC users (OS X Lion and newer): Download and install GDAL Complete 1.11 Frameworks 1st, Matplotlib 2nd, and QGIS 2.8 3rd.
- Linux users should consult the QGIS download page and follow the instructions to download the 2.8 release version for your distro.
...