Do you think these rumors are real? I tend to think yes and I think this will happen soon.
To be well understood, I believe in Ethereum's potential (even though so far I have lost money investing in Ethereum, but I notice that it is still a good project and this will makes it to explode one day) and I still believe that by the end of 2018 it will have an increase of thousands of dollars, but at the same time I feel that it will drop much more than it is now before starting the growth again.
No one knows if Ether will hit 400$ or hit much lower than that. Its normal that altcoins will go down because of btc. Most of the coins value depends on bitcoin value so if it will go down, ether will also depreciate in value. What I can see and understand on what is happening right now is normal. Price will go up again in future. Not exactly when, days, weeks, months or years but I am sure that the price will go up at the end of year or start of next year.