Apple introduced another codec to the ProRes family last week, ProRes 4444 XQ. This codec is geared towards high-end visual fx as the codec supports 12 bits per image channel, 16 bits for the alpha channel and carries a data rate of about 500mbps for 1080p30. From Apple's White Paper:
This is welcomed news for vfx pros in a ProRes-centric workflow. However, I would imagine most doing work at this level are in a DPX sequence workflow. But having the additional option may prove to be helpful for some shops.