The development team Debian released the fourth point release of Debian 9. In the new Debian 9.4, all the latest patches are included. So if you already have Debian 9 installed then you don't need to download any of the new ISOs, just update your system.
In their announcement, the Debian project he says:
“The Debian project is very pleased to announce the fourth update of the Debian 9 stable distribution (codenamed stretch). The point release mainly adds fixes for themethe security, along with some adjustments for serious problems. The security patches have already been published separately. ”
Some notable packages that have bug-fixing updates included in this release are: anti-virus clamav, the cups printing software and the debian-installer which comes with a slightly newer kernel. The flatpak package system has also been updated to a newer version.
The following well-known software packages also received security updates: Firefox, Thunderbird, Tor, Wireshark, OpenSSL and Transmission.
Download the new ISO (full)
debian-9.4.0-amd64-DVD-1.iso 2018-03-10 12:58 3.7G
or if you prefer some of the live images
debian-live-9.4.0-amd64-cinnamon.iso 10-Mar-2018 13:40 2.0G
debian-live-9.4.0-amd64-gnome.iso 10-Mar-2018 13:40 2.2G
debian-live-9.4.0-amd64-where.iso 10-Mar-2018 13:41 2.4G
debian-live-9.4.0-amd64-lxde.iso 10-Mar-2018 13:38 1.9G
debian-live-9.4.0-amd64-mate.iso 10-Mar-2018 13:37 1.9G
debian-live-9.4.0-amd64-xfce.iso 10-Mar-2018 13:37 1.8G