There is a good chance this will happen because more people are investing these days and its also that the bitcoin future is much better than a couple months before.
We are now staggering at the 420 dollar range so that is also why there is a good chance it will rise to a higher amount of the 500 dollar level in about a month.
500 is reachable in 2 more months if the demands for bitcoin is high enough and the supply is being hold by whales,but with the current situation of the market its just playing up and down.
to be honest we will not need to wait for that much time right now as the price is stable for a while and will soon start increasing
we might see such big numbers in just a month while i would predict 600 dollars after two months or so