Did anyone else notice this?

[Crazihors]

she is very calculating, and i reckon that she might have subconsciously put in several hints to future events - this could be one of them

[Commonmind]

Still, I'm inclined to believe the latter is true, that the images are merely a manifestation of how Harry feels about these two characters. Even J.K. herself has said that throughout her series some turn-of-events came about through the natural process of writing - developing the characters and the plot as the story progressed.

[Majimaune]

I have to agree with the (not so long winded anymore) Commonmind.