While the exact changelog isn't widely documented, by looking at similar GX6605S updates, we can infer what this "exclusive" firmware version likely includes:
Standardized login interface for premium IPTV playlists. gx6605s s18069 software exclusive
DVB-S2 GX6605S WiFi Dongle 12 Months IP TV HD DVB-S2 Set-top Box FTA Satellite TV Decoder H.264 Satellite Receiver Go to product viewer dialog for this item. While the exact changelog isn't widely documented, by