OS X 10.5.3 is Now Available!

This update is quite big.... It is 420MB.
Yeah, I've updated my MacBook Pro to 10.5.3, but... hummmm, I really don't feel any big change??? The contents are just as usual, like better compatibility, stablility, blur blur blur.
So what's up with this update?

As you know, WWDC is on the corner. And Apple will probably launch new iPhone with 3G compatible. So I am guessing there're lots of iPhone related modifications are included in this update.

WWDC is coming up next week! We gotta keep our eyes on the conference :))