ReleaseNotes / Known issues
https://wiki.ubuntu.com/NobleNumbat/ReleaseNotes

Download
Releases: http://releases.ubuntu.com/24.04/
Torrent: http://releases.ubuntu.com/24.04/ubuntu-24.04-desktop-amd64.iso.torrent
Cloud image (minimal): https://cloud-images.ubuntu.com/noble/current/noble-server-cloudimg-amd64.img

Repository

echo "deb http://de.archive.ubuntu.com/ubuntu noble main restricted universe multiverse" | \
    sudo tee /etc/apt/sources.list.d/ubuntu-noble.list
echo "deb http://de.archive.ubuntu.com/ubuntu noble-updates main restricted universe multiverse" | \
    sudo tee /etc/apt/sources.list.d/ubuntu-noble-updates.list

sudo apt update

Install python2 under Ubuntu 24.04

sudo apt install zlib1g-dev
wget https://www.python.org/ftp/python/2.7.18/Python-2.7.18.tgz
tar xzf Python-2.7.18.tgz
cd Python-2.7.18
sudo ./configure --enable-optimizations
sudo make altinstall
sudo ln -s /usr/local/bin/python2.7 /usr/bin/python2

Workaround

# install HWE kernel
sudo apt install  linux-image-generic-hwe-24.04-edge

# rc.local replacement
crontab -e
@reboot /root/bin/script.sh

# Install pdftk
wget http://mirrors.edge.kernel.org/ubuntu/pool/main/g/gcc-defaults/libgcj-common_4.9.3-9ubuntu1_all.deb -P /tmp
wget http://security.ubuntu.com/ubuntu/pool/main/g/gcc-5/gcc-5-base_5.4.0-6ubuntu1~16.04.10_amd64.deb -P /tmp
wget http://security.ubuntu.com/ubuntu/pool/main/g/gcc-5/libgcj16_5.4.0-6ubuntu1~16.04.10_amd64.deb -P /tmp
wget http://mirrors.edge.kernel.org/ubuntu/pool/universe/p/pdftk/pdftk_2.02-4_amd64.deb -P /tmp
cd /tmp/
dpkg -i pdftk_2.02-4_amd64.deb libgcj16_5.4.0-6ubuntu1_16.04.10_amd64.deb  gcc-5-base_5.4.0-6ubuntu1_16.04.10_amd64.deb  libgcj-common_4.9.3-9ubuntu1_all.deb