I just got my update 10min ago, and there is a lot of improvement's to FCPX 10.1.2 & and the ProRes4444XQ .
It a HDR Codec up to 16bit with Alpha. Not just Rec 709 anymore.
From the Apple ProRes White Paper, June /2014
• Apple ProRes 4444 XQ: The highest-quality version of Apple ProRes for 4:4:4:4 image
sources (including alpha channels), with a very high data rate to preserve the detail
in high-dynamic-range imagery generated by today’s highest-quality digital image
sensors. Apple ProRes 4444 XQ preserves dynamic ranges several times greater than
the dynamic range of Rec. 709 imagery—even against the rigors of extreme visual
effects processing, in which tone-scale blacks or highlights are stretched significantly.
Like standard Apple ProRes 4444, this codec supports up to 12 bits per image channel
and up to 16 bits for the alpha channel. Apple ProRes 4444 XQ features a target data
rate of approximately 500 Mbps for 4:4:4 sources at 1920 x 1080 and 29.97 fps.
Note: Apple ProRes 4444 XQ requires OS X v10.8 (Mountain Lion) or later
There is 4 updates, ProApps Codec 1.0.5 , Motion 5.1.1 , Compressor 4.1.2 , FCPX 10.1.2.
There is better file management in fcpx , i hope this will help with Cdng import.
So I my be Staying in FCPX with Magic Lantern Raw
edit: Over the next few days I will put the updates to work and see if the Cdng workflow is a Real option with Apple products.
Link you the ProRes White paper -->
http://images.apple.com/final-cut-pro/docs/Apple_ProRes_White_Paper.pdf