From the file you attached :
"The percentage uniform mark is not the same as the actual mark that the candidate obtains on the question paper, since it depends on the position of the grade thresholds (which may vary from one session to another and from one subject to another) and it has been converted into a percentage. The percentage uniform mark will always be calculated out of 100."
This clearly states that the Threshold system is still in place and actual grades reported will be based on the grade boundaries. However, in addition to the grades, a % Uniform Mark will also be given. This, I trust, means that along with our results, a Percentage Uniform Mark will also be reported. (which is the only difference for this year onwards) (june 2010)