Most of us kinda knew that...the question is will DJI offer a mount for the larger screen on the RC. Actually, the larger question is when will DJI release it!
The Mavic Pro and Osmo series gimbal cameras (excluding the Osmo Mobile) are only compatible with 5.5" Crystalsky monitors
DJI AERIAL SYSTEM COMPATIBILITY
The CrystalSky monitor can quickly connect to the Inspire series, Phantom 4 series, Phantom 3 series (Phantom 3 Professional, Phantom 3 Advanced), Matrice series,Mavic Pro and Osmo series (except the Osmo Mobile) over Wi-Fi or via a remote controller USB port, depending on your specific product.* Also, CrystalSky easilyattaches to the Cendence remote controller without an additional mounting bracket.
*Monitor mounting bracket recommended. The Mavic Pro and Osmo series gimbal cameras (excluding the Osmo Mobile) are only compatible with 5.5" Crystalsky monitors.