Bitcoin is a decentralized currency It is very difficult to say whether such coins like Bitcoin will be discovery in the future. But in my opinion such coins will not be another discovery.
They created many altcoins and say their coins are Bitcoin killers but those coins die with time. Those coins fail to kill Bitcoin even you talk about Bitcoin Forks.
How many Bitcoin Forks are there?Bitcoin is decentralized and it is unique. We did not have another coin among thousand of altcoins can have decentralization like Bitcoin.
Discovery, game changer are marketing words, buzz words used by altcoin developers to scam investors.