The Official Site has refrained from including a chapter on what was submitted in the 2012 CCRC application. Unlike the 2002 COA, there are no other points of reference.
It is certain that the results from the Arizona tests were included. This has been discussed before on here. It is not really evidence as Neville's burn marks could have been acquired at any time.
The scratches on the mantle piece were probably included. As experts have been speaking about it since the 2002 appeal.
Neville's alleged call to the police was not included.
The CCRC gave Jeremy's lawyers extensions to submission deadlines. With the case always in the media, it would be assumed that this was due to there being so much evidence they had to get together. However it could be because there was not enough evidence. This is backed up by the fact that the CCRC did not pass the submission to the COA.
Accusations against Julie, the police and relatives cannot be included in a CCRC application. It is not evidence. Just accusations.
The 2002 appeal had a lot of points. None of these points can be included in the 2012 CCRC application. As they have already been discussed before and dismissed by the COA.
To find new points of evidence highlighting innocence will be hard for a case that has already been so comprehensively investigated over 30 years.
So it seems likely the delay could be there was not enough evidence, rather than too much.
It will be good if information can be supplied on what was in the CCRC application and why there were deadline extensions given.