This article requires more details with links to the other upgrade options. Maybe even have a general intro page on updates. Also, the same steps to record the Ubuntu version information before running the update.
In a server environment there are different levels of updates,
- Package Update
- Kernel Updates
- Release Updates
This is to allow the administer fine grained control. The more higher level of updates, the more risk to a system.
sudo apt-get dist-upgrade
In some cases the system will prompt you to reboot for the new kernel to take effect.