tiger has been said to be out "first half 2005" so that would indicate apple will push its release to wwdc2005 where they hopefully announce the great-super-mega-cool new G5 powerbook. steve said they won't release another operating system very soon after tiger, so they WILL take their time to make tiger ready by the time we can buy it, unlike panther which was flawed until 10.3.4 version came out. so no, tiger won't be out any time soon.
ilife '05 is a possibility, but not a "sure thing". quicktime seven maybe?