Don't worry! It's only stuff...

Add backports
sudo add-apt-repository "deb http://archive.ubuntu.com/ubuntu $(lsb_release -cs)-backports main restricted universe multiverse"

Schedule
https://wiki.ubuntu.com/XenialXerus/ReleaseSchedule

ReleaseNotes
https://wiki.ubuntu.com/XenialXerus/ReleaseNotes

Download
http://releases.ubuntu.com/16.04/ - releases
64 bit Netboot CD

Repository
# Ubuntu Xenial updates repository
echo "deb http://de.archive.ubuntu.com/ubuntu xenial-updates main restricted universe multiverse" > /etc/apt/sources.list.d/xenial-updates.list

Fix
https://raw.githubusercontent.com/panticz/scripts/master/disable_biosdevname.sh
# fix grub
sed -i 's|vt_handoff="1"|vt_handoff="0"|' /etc/grub.d/10_linux
sed -i 's|GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"|GRUB_CMDLINE_LINUX_DEFAULT="net.ifnames=0 biosdevname=0 quiet splash"|g' /etc/default/grub
update-grub

gsettings set com.canonical.Unity.Launcher launcher-position Bottom

sudo apt-get install -y pluma caja

Release Notes
http://www.ubuntu.com/getubuntu/releasenotes/1604

Update kernel
echo "deb http://archive.ubuntu.com/ubuntu xenial main universe restricted" | sudo tee -a /etc/apt/sources.list.d/xenial.list
echo "deb http://security.ubuntu.com/ubuntu xenial-security main universe restricted" | sudo tee /etc/apt/sources.list.d/xenial.list
sudo apt-get update
sudo apt-get install linux-image-generic linux-firmware
sudo rm /etc/apt/sources.list.d/artful.list
sudo apt-get update