I was curious and looked at command line args more.
eopkg blame alacritty
would get you the installed version.
You can take the release number shown for that and work backwards for releases.
Name: alacritty, version: 0.15.1, release: 35
So for the previous update:
eopkg blame -r 34 alacritty
or you can view the last few updates with the stupidly named -a flag because it doesn't actually show all.
eopkg blame -a alacritty