Blog: We Are Filming The Procession - 2014-10-11
They just raised the quota from 7,000 to 10,000 because Dear Leader pr0nounced that 10,000 should be in attendance.
So, whether there are 500 or 5,000 people that show up (they are being HEAVILY pushed from ALL OVER THE WORLD to attend) it will "officially" be 10,000 in attendance. They will stage a bunch of shots as usual where the frame is filled with bodies and you cannot see the surroundings so there is no way of telling how many there are. But they will assert the shots are "proof" of the massive attendance for the monumental event.