Source Filmmaker version 0.9.8.3 has been released. This update will be applied automatically when your Steam client is restarted. The major changes include:

• added -sfm_startup_script commandline option that allows you to choose a python script to run at sfm startup
  
• changed "Show shot ID overlay" to a render setting, instead of an app setting
  
• transforms can now have (uniform) scale, and you can add an animatable scale control to models and bones in the animationset editor
  
• added maps, particles, materials, textures, sessions, shots and animations to the workshop
  
• removed Submit To Saxxy Awards menu item
  
• misc crash fixes