Comment 2 for bug 1820986

laney, let me excerpt the gnome-boxes NEWS entries for you. Ubuntu 19.04 already has gnome-boxes 3.31.90.

https://gitlab.gnome.org/GNOME/gnome-boxes/blob/gnome-3-32/NEWS

Or if you want to browse the commits:
https://gitlab.gnome.org/GNOME/gnome-boxes/compare/v3.31.90...gnome-3-32

3.32.0.1 - Mon 18, 2019
=======================

This is an emergency release to workaround problems
users can have with 3D acceleration

Changes since 3.32.0

  - Offer option to disable 3D acceleration

3.32.0 - Mon 11, 2019
=====================

Changes since 3.31.91

  - Make "Launch" string translatable

3.31.91 - Mon 04, 2019
======================

Changes since 3.31.90

  - Fix default collection names in translations
  - Use nonet for AppStream metadata test
  - Prevent X11 access in a Wayland session with newer Flatpak
  - Check libosinfo for optional passwords
  - Only express-install supported medias
  - Improve initrd-injection support
  - Support express-installing Ubuntu