EB have released the SP a day early, and have a dealio on where you trade in your GBAdvance with 2 games and get the SP for $49.95 (whether or not this is good, I leave to you). Apparently it's only for today though, so may be wise to get in if you wanna take advantage of it. This was at EB Toombul, so at the least, it's Queensland EB's.
Man they're small. And very nice. Trendy. I want one. Someone buy me one. And Metroid. @:-)
You can read about the Gameboy SP review on gameBiz
http://www.gamebiz.com.au/reviews.php?action=display&id=79