Probably around summer 2018. This is my personal guess.
Ya I think the same. Ethereum is just an altcoin as like other So the price of ethereum will gradually raise.I think it will reach 1000$ in February of 2018,in a three months period. Ethereum has good base but it's not decentralized as like bitcoin, this is reason for Ethereum Price is raising gradually. We can expect this raise in next year. It will not happen in this year end sure.
If it is just like the other altcoin why the people are comes with the ethereum based smart contract projects. Bitcoin growth and eth is seems like same in the chart. Whenever the bitcoin bumps on that time we find the ethereum also grows in the price movement.
I think before end 2018 January itself we will find the ethereum value touches 1k USD for sure.