Greetings Lords of Rigel!
This update brings some optimizations to memory use in galaxy view, system view, and the research menu. Stars, research icons, and system asset streaming are optimized with a reduced memory use in saved game data. This should improve performance for some systems in new games. Saved game comparability has also been kept although underlying game data structures have been optimized for memory use.

System view optimizations
The main update however is the addition of the achievement menu in the Hall of Fame. This syncs with your steam cloud but is based on your local achievements save file.

Accessing the achievements menu from Hall of Fame

Achievements Menu
If you are having issues with achievements not syncing follow the steps in
common issues with steam cloud saves and you can delete your achievement save for it to force an update. Achievements you earn through your games will be stored in the achievement save and on load it will attempt to sync that save with steam cloud to capture achievements throughout your games.