Παράθεση από: https://lists.ubuntu.com/archives/ubuntu-announce/2019-June/000245.html
The Ubuntu engineering team has reviewed the facts before us and concluded that
we should not continue to carry i386 forward as an architecture.
Consequently, i386 will not be included as an architecture for the 19.10 release,
and we will shortly begin the process of disabling it for the eoan series across
Ubuntu infrastructure.
While this means we will not provide 32-bit builds of new upstream versions of libraries...
Δηλαδή όσοι έχουν Pentium 4 είτε μένουν στην 18.04 για όσα χρόνια τους πάει, είτε πάνε σε Debian κλπ.
https://discourse.ubuntu.com/t/i386-architecture-will-be-dropped-starting-with-eoan-ubuntu-19-10/11263/2