ppl talk here about it..idk their sources..
ETH POS has no official release statement, however, I watched a video of one of the developers saying this is going to happen in the next update. (I think it was called Caspa?)
People have been posting threads the same as this since September last year and if you listened to the nay sayers back then you would have missed out on, at least in my case, a minimum of 300% ROI to now.
I think there will always be something to mine but its your choice.
Never risk more than you are willing to loose.