Well Ethereum never died, it is only moving in consonance with other altcoin but trust me, ethereum might surprise us, also it has more acceptability after bitcoin so we hope to see the value of ethereum rise.
thats what i thought when i first read the title thread. eth has never died so why would it come back in the first place? or maybe the op is referring the dead period when eth hit its low points but that low points were still very very high as compared to its initial price.
eth maintains its 2nd position in the market and the dev team has good plans for this network. so i have high hopes on this platform! the adoption is no doubt expanding even if there are a lot of crap projects built in ethereum.