I was very underwhelmed with iLife 09 so if there is a iLife 10, and I'm not sure there will be. I'm hoping it will have some more significant updates to the applications.
iWeb is long over due for an update, iPhoto needs some real features, not just the face recognition stuff. I'm sure iMovie could use a bit of refreshing as well but I really don't use that app so I can't say for sure.