Interesting news!!! According to www.heise.de pioneer will be launching its new burner DVR-A08, which can write +r/-r medias @ 16x, ±rw @ 4x and +r @ 4x!!!, this august in germany. But the most interesting part is, pioneer says that some recent 8x burner can burn as fast as DVR-A08 both inluding dl@4x (i think i remember this lol).
You can read the original post here (german):