Considering that I don't think there are any commercially-available OLED screens, I'd say it'll be awhile.
Actually there are rumors of OLED screens at WWDC 09, but I would take these with a grain of salt, as y'all at Mac Rumors know
A MBP with a 15" OLED display would cost (I'm just guessing) about $8,000. The display that effer posted cost $5,000 and that's only 11".
The display that effer posted cost $5,000
HAHAHA You have no idea how hard I'm laughing right now.
Their username fit perfectly into that sentence! Priceless(no offense "effer")
OLED is just too "contrast-ey" for me personally. I find its over-saturation off putting in our local Sony Style store for use in a laptop. Blu-Ray fine, but keep OLED away from my Mac!
OLED is way superior to any other screen technology around. I don't think judging the technology based on one 11" in a store is fair. Trust me, OLED is the future and someday they will be in all laptops someday. Don't forget though that, that 11" screen has a very low resolution and would not be practical for computer usage.