Look at the road map of Ethereum, they should have done this update for a long time, but they are pulling time. Im not sure what theyll do this time as well. I really wonder where all the miners will go if there is a POS system. This is a very serious update that can lead to bad consequences.
P.S. I hope the miners will go to the Ethereum Classic!
I am also worried about what pos would do to ethereum, I feel like miners have always been the push behind eth's price.