It was already on Rock 4c+, earlier there was same chip named RK620-1 (rockchip)
On schematics it’s DP to HDMI:
I don’t know why its rebranded now, but probably nothing new since 4c+ 
It was already on Rock 4c+, earlier there was same chip named RK620-1 (rockchip)
On schematics it’s DP to HDMI:
I don’t know why its rebranded now, but probably nothing new since 4c+