We are working on it, but with no result so far, some big exchanges refused us in the first place, some don't lists new coins at this moment and some didn't answered to our request.
We will keep trying, until we will bring to you a top exchange, unfortunately we can't tell when this will happen.
Which big exchanges are your current targets? Could you tell me about them, please.
Binance, Poloniex, or HitBTC, any of them?
Binance, no, as the listing fee is too high, only ICOs can get listed there atm or well established coins. Poloniex, yes, HitBTC yes, also Bittrex, KuCoin, OKEx, Bit-Z and Huobi.