FortiWLC 64-bit OS Support
With this release of FortiWLC, all controllers support 64-bit OS ONLY. 64-bit migration images are available to migrate the existing 32-bit FortiWLC-50D, FortiWLC-200D, and FortiWLC-500D hardware controllers to 64-bit, during upgrade to version 8.6.0. See Upgrading to 64-bit FortiWLC-50D/200D/500D.
All release versions post 8.6.0 (after FortiWLC-50D/200D/500D migration), will have one common 64-bit image file for all the FortiWLC models.