if it is anything like in the PAST Black Rock City LLC is working with the BLM to get a multi-year agreement.. instead of year to year permits.
if the claim of negotiations for 70,000 is true, and it might not be.. it is very likely that they are following the model set in the previous five-year-agreement that allowed a rise to 50,000 people over a series of years (2006-2010)
odds are, in my opinion, that the BLM and Black Rock City LLC will have a multiyear agreement that allows for expansion of the population of a series of years.. in the past this expansion was about 6% each year on the previous five-year operating plan..
when you look at the numbers since around 2005 the average increase in attendance is about 5-6%.
that is in holding with previous BLM agreements and with the numbers of tickets see for sale.. 57,000 tickets for sale in 2012 is about a 5% increase from the population in 2011.
if that increase holds, getting to 70,000, with 6% increases on average each year.. would bring us to around 70000 in 2016.. this year it is 2012.. ..it would be very much like the scope the BLM and the Black Rock City LLC agreed to in the previous five year operating plan..
(and it should be noted that the numbers stipulated are for AVERAGE population numbers at the event site over a given period.. sometimes it might be more, sometimes it might be less...)
I would say... dont expect any more tickets to be sold than the 57,000 theyve already offered.. and certainly dont get your hopes up for 13,000 more tickets..