Foxeer is about to release the receiver module for FatShark type goggles called WildFire. The name somehow reminds the RapidFire from ImmersionRC, thus hinting us to the similarity of the received video signal processing method.
There is no more info available yet, except the Foxeer post on the FB:
“Ultimate Goggle receiver module with cool appearance and amazing performance.
Foxeer WildFire uses the lastest technology in RF to improve the Fpv feed even in high multiphating environments.
Anti-rolling shutter technology avoids the unsync picture by changing to standard diversity receiver under a low rssi value.”