3.5.9 What Devices are Supported by the Compiler?
New devices are usually added with each compiler release. Check the readme document for a full list of devices supported by a compiler release.
You can typically add support for a new device without updating the compiler once a device family pack (DFP) becomes available for that device. DFPs can be downloaded from within the MPLAB X IDE. See also 5.7.1.7 Dfp Option.