I dont think the difficulty will change soon. but there will always be people who get free electricity and put htere miners in that area. Fo those people, they will be profitable all the way to the end.
You don't have tho think. ETH team accounted that difficulty will be increased by almost 50% until the end of the year (September and November are two points If I remember right) and that is not counting additional miners that will increase difficulty even further.
That is not correct at all. The main reason for the drop in profitability is the programmed ICE AGE difficulty ramp up that was implemented to get miners prepared for the Casper POS release planned for the end of this year. Which exponentially increases the difficulty and block times artificially as the date to the switch to POS got closer.
Now that the move to POS has been postponed for at least 12 months, the ETH developers will undue the effects of the artificially high ICE AGE difficulty and return to the difficulty being predicated by the network hash rate and 15 second block times in the next fork scheduled for the end of September. If they can't push out the fork before the next pre planned ICE AGE ramp up, there will be another difficulty bomb on September 24th, until they release the fork.
https://themerkle.com/ethereums-metropolis-hard-fork-will-activate-at-the-end-of-september-2017