The beta branch on Steam has received an update with some important changes.

• A new project template called "Tutorial Samples" has been added, which includes the files you need to complete the new tutorials found here.
  
• A new script, Main.lua, has been introduced to take over the main entry point of your program. As explained in detail here, this will have no effect on your existing projects.
  
• The screenshot publish feature is fixed.
  
• Flowgraph arguments no longer require the EnableLegacyFeatures setting to be enabled.
  
• A sweet new welcome page has been designed.
  

(Build 621802 was updated to 626936.)