Version 0.17.57

• Restored ore placement to match that of 0.17.50 more
  

• Optimized synchronization time of blueprint library to a new game map. more
  

• Fixed glitch in pollution cloud overlay rendering. more
  
• Fixed joining multiplayer through Steam Friends would not work sometimes. more
  
• Fixed rail signal consistency for a very special corner case. more
  
• Fixed that the Linux server's standard input could get closed under some circumstances. more
  
• Fixed crash when enabling blueprint library cloud sync when local blueprint library did not exist. more
  
• Fixed that trains couldn't be rotated while in the map editor. more
  
• Fixed that LuaGameScript::ban_player() only worked with real players. more
  
• Fixed that the changelog GUI could have unnecessary scroll bars. more
  
• Fixed that hiding the search bar didn't unfocus it, so it was still possible to write to the invisible search bar. more
  
• Fixed wrong signal placeability in some specific cases. more
  
• Fixed that the entity tooltip would flicker in some cases related to the tooltip delay. more
  
• Fixed a crash when opening assembling machines with fixed_recipe set in the latency state. more
  

• Added a prototype property for hiding recipes from the player crafting GUI.
  
• Renamed spot noise argument 'minimum_candidate_point_spacing' to 'suggested_minimum_candidate_point_spacing'
  
• Added base_productivity to assembling machines, mining drill, and lab prototypes.
  
• Added LuaEntityPrototype::base_productivity read.
  

• Added optional "ignore_characters" to LuaSurface::clear().
  
• Added on_gui_confirmed event.
  
• Added LuaGuiElement::numeric, allow_decimal, allow_negative, is_password, lose_focus_on_confirm, clear_and_focus_on_right_click read/write.
  

You can get experimental releases by selecting the 'experimental' beta branch under Factorio's properties in Steam.