There is a file attached to the webpage that golden girl linked to.
The file has a paragraph that states
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 denotes that the threshold system is still in place, hence a grade curve is still present.
And, what blackbunny says is absolutely correct ; Study Hard, don't depend on external factors too much, and you can be confident about a good grade.