This is the new Raspberry Pi OS release, please download the latest image at Raspberry site.

Open the terminal and run:

# install the latest Dicaffeine version and add the repository
curl -fsSL https://dicaffeine.com/apt/install.sh | sudo sh
 
# reboot the Raspberry:
sudo reboot
 
# access locally via desktop icon or remotely with password dicaffeine

Please refer to: Changelog.