How do you get the idea that they will very soon offer fiat deposits and withdrawals? Bitfinex has been offering fiat options for very long already!
They already announced.. And no, as far as i know, bitfinex always offered just usdt pairs.. Just last month offered real usd pair.. Or maybe I'm wrong with binance? But i think I'm right.
Also bittrex already announced it.
Ok now I am not sure anymore. I always thought Bitfinex was one of the major exchanges offering fiat gateways. Anyway, if it will be there soon it's fine