The price of bitcoin in the market right moving up very slowly. For bitcoin to hit $15k by next month I think would be impossible because of that movement in the market. No improvements until now so I guess people have to wait after couple of months for bitcoin to hit much higher value.
This time the market value of the bitcoin will go higher than that of the previous year highest jump or value as we know that the average rate of the Bitcoin is improving with the passage of time and we will be standing in a value higher than 20k dollar. The Bitcoin can achieve any possible value as it is better in strength and potential as we go on better than other currencies.