The only thing i could see it being is a different story arc. As others have said, JKR is only writing 7 in this series. If it is true that an 'adult' version of Harry Potter will be written, i could only see it being a different story arc which would be terrible because it would be so different to the books so far.
Even though i don't want the books to end, i don't want to see more books released just to make some extra money. It never works well and just ends up ruining the whole series. It does sound like just another rumour going around made up by some random person wanting to cause some chaos and thats what i hope it stays as.
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