The year will be the year of ICO, utility tokens that has use case that most people outside could relate to. But most big old time blockchian would continued exists i think .

Also, to note on new exchanges that created with ICO and with their own coins such as Binance, Cobinhood, coss, qash, or exchanges protocol providers like 0x and Kyber. They will be ready to takeover from the previous big players.