I've been maintaining this tracker of what flavors have dropped i386 from their images and figured sharing it might be helpful for someone.
i386 Images dropped
|Ubuntu Flavor||Gone||Decision Date/Thread|
|Lubuntu||Keeping||for now as long as sufficient testing|
|Snappy Core||Keeping||No public comments available yet|
Dropping the i386 port, mini ISO, etc are not being considered when I wrote this.