Why? Because they are changing Snape's death scene from the book. To make it more "romantic" apparently.
...Yeah, don't ask me. I just know I look forward to seeing what this does to the Snapefen. I must pre-emptively prepare popcorn.
In other news, Japanese scientists are working on cloning a wooly mammoth. Which is like the first step towards Jurassic Park, methinks.
And check out this dude playing the Doctor Who theme on musical Tesla coils.