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.