There you go - http://www.davidcheok.com/storage/EOS1dXRAW.zip
The zip contains RAWs at 3200, 6400 and 12800 ISO.
Please create a mirror as original photog's site may slow down.
But question is, is support available for 1DX raw files?
Credit :- David Cheok.
Yes I can open them with the Adobe 6.7 Beta