The issue as I have now come to understand it is simply a doubling of the total amount. The percentage of each stake remains unchanged (I.e. 1MM NEM is now 2MM NEM).
The genesis of this change being the apparent Chinese superstition regarding the number "4".
The genesis of the change may have been an apparent Chinese superstition. But then some attempted rationale was put forth to increase its number regardless. Hence the figure of 8 Billion came about although a larger number is still something that can be pondered and weighed upon.