Does anyone know what an estimated difficulty increase would be like, for example how much will a d3 miner make at the end of sept how much will one make at the end of october and how long would one make after the end of november?
Don't forget the iBelink miners that are showing up in peoples hands today, and the shipment that will be going out in Oct.  Also the Innosilicon A5's that will ship in October, and now pre-order for Nov is about to open up with the A5.  Add that all to the hash that Bitmain will add in Sept, Oct, Nov... 
And nobody knows the number of miners in each of these batches.  And there are very few coins that are X11 that are profitable to mine so most of that hash will be pointed at Dash.  So it is a perfect storm and going to be a nightmare.