I would doubt that they would box the newest versions of iLife and iWork together with Snow Leopard.
Why the hell not? If they do bring out new versions (which is pretty likely), they'll switch the ilife and iwork for '10 versions.
There's always something around the corner. If you waited until January, and there was no update, you would ask yourself, "Should I buy because it's still current or wait because there might be an update since I waited four months for one." JFreak's advice is the best any of us can do without knowing Apple's update schedule.If you need one of them now, then buy now. If you can wait, then wait.