Maybe this is the trade-off in getting a G5 into a PowerBook?
"Guys, we got some good news and some bad news...
Good news, we're announcing the G5 PowerBook at WWDC next week. Bad news? It's bigger than your windshield, weighs 19 pounds and costs $4799. But hey, you all just HAD to have a G5-based laptop, so STFU...".