I have now installed Mac OS 10.8.3 on my MacBook Pro 13" Retina 556Gb. SSD, which already has Windows 7 running in a Boot Camp partition. I have opened Boot Camp Assistant 5.0.2(462) and selected the second option to download the latest Windows support software from Apple. I have tried to download this to an USB 4Gb flash drive, but it seems to stall at the halfway point, and progresses no further.
I only need the new drivers, as I then plan to use my Windows 8 upgrade DVD to install Windows 8.
Has anyone tried to do this? Have they succeeded? Are they also using a machine with SSD?