David H has posted his take on the importance of the redactions here. I was in the meantime working on my own version of the same story. I'll post it here anyway, in case people want a different take on the same facts.
In David's post yesterday, he described how a new release of data from UEA shows how his submission to the Russell review had been heavily edited before Geoffrey Boulton sent it to UEA for a response. He also outlined the evidence that suggests strongly that the full unedited version was supplied to Osborn and Briffa, possibly from another source, in spite of UEA's claims to the contrary.
Some of the most important omissions concerned the IPCC’s retrospective change of the deadline for submissions to the Fourth Assessment Report, a change that was apparently made in order to allow the Wahl and Ammann paper to be used against McIntyre and McKitrick’s refutation of the Hockey Stick.