There isn't a lot you will be able to see on the surface but I changed a ton of stuff and made a lot of improves.
Change Log
• Load game menu fixed/updated
• Controls option menu fixed/updated
• Splash screen audio now is affected by music volume options
• Vast improvements to audio system, huge performance boost
• Changed the way the Steam API was initiated, performance improvement
• Reduced video memory usage by about 23mb
• Fixed window reset issue (reported since the initial release)
• Native resolution increased from 720p to 1080p (improved visual quality)
• Singleplayer worlds can now be saved/loaded
• Save file extension type changed from ‘.sav’ to ‘.pes’ to avoid conflicts with the stable build save files
• Now launches with a splash screen
• ANSI files converted to UTF-8 (Now supporting various OS languages other than English)
One major difference you will notice is that the game is more clear. Additionally, I've left the grass test enabled so you can see what it looks like. I haven't fully setup a system for world details such as grass.