As expected, the first Ubuntu 27.04 daily builds are based on the previous Ubuntu release, Ubuntu 26.10 (Stonking Stingray), which arrived last month on October 15th. This means that the Ubuntu 27.04 daily builds are powered by Linux kernel 7.3 and use the GNOME 51 desktop environment.
During its six-month-long development cycle, the daily build ISOs will be updated every day with newer GNU/Linux technologies, such as the Linux 7.4 or Linux 7.5 kernels, Mesa 26.3 graphics stack, the upcoming GNOME 52 desktop environment, GCC 16.2, Python 3.15, GNU Binutils 2.47, and others.