iLife (ANY version) will probably never be included, as it never has been in the past.
NO retail copy of Mac OS has EVER included iDVD, one of the core components of iLife, and my hunch is that the same will be true for GarageBand. (Note that iDVD and GarageBand are by FAR the biggest iLife apps, each being well over a gigabyte each due to the themes and loops, respectively. The other iApps are pretty small.)
tooki