online update after autoinstallation

openSUSE 11.1 will allow you to run an online update at the end of the installation. All you have to do is to set the boolean value do_online_update in the software section to true. That makes only sense if an online update repository is available and so you should configure the suse_register part in the profile too. suse_register will add an online repository automatically. If the online update source has been added via add-on section in your profile, then you don't need to do the online update because autoyast has installed the latest packages during stage 1 already.
If a kernel update gets installed during that online update, a reboot at the end of stage 2 is triggered too.
Here is the official documentation.