Ethereum is talking about 2020 as its target for scaling upgrades. There are other projects that haven't launched yet that probably have an advantage over them, as so long as it can integrate with Ethereum rather than claim it can totally supplant it.
There are projects like Cardano and Zilliqa, but then there are some like Orbs that are using blockchain virtualization claiming it can work in tandem with Ethereum.
I assume Ethereum will implement some of its solutions before that 2020 date, but they will probably need to rely on more partnerships to do it.
People tend to forget about this possibility with so many new coins out there. When talking about PoW's problems, most people get hooked on discussing the inefficiency of power these days and the costs that has on the network. Great work.