Once the intel chips are used across every line (and every Mac can run both, Windows Or OS X) I think we'll see their marketshare really jump.
The real coup would be to write an Apple OS that could run on any Wintel platform. Finally give Microsoft a reason to cut the bloat out of their bloatware.
People have been saying things just like that for years now.
"once apple does this"
"once apple does that"
"once (x thing) is complete"
"once next year comes around"
"once the new OS is mature"
"once apple kills the market for clone macs"
Etc etc etc................