DS Light Colors

I am looking to buy a DS Lite (I own a normal DS) and I was wondering if the new blue or new red DS Lite are upgraded at all from the white one. Is there any difference between them other than the color?

Also, should I wait until Nintendo comes out with another color? Anyone know of any colors that are going to be released soon?

Thanks!

I bought the black and crimson. It looks pretty hot. The black and blue one looks real nice too.