Not Larry Potter...

...but Tanya Grotter.

The font is even similar to the US Harry Potter "lightning bolt" font.

I understand that the similarities couldn't be ignored in this case, but going forward... I'm wondering what this means for the future of teen wizard stories.

Yes, Harry's pretty widespread these days. If Rowling, et al, are going to continue to be litigious, will it be possible to write anything in the genre without being accused of being derivative?