RC69 was a minor update in October 2017 with a few updates.


Here's a summary:

• Made changes to remove our native threading system (which had scan-line problems when a lot(!) of threads were used) in favor of a newer library provided by Microsoft. 

• There may be performance changes.  Saturation also has a new parameter.

• Continued to fix issues related to a large number of threads: Fixed a scanline issue with the Posterize filter
  

• The Shaggy star plugin is now internalized under Filters/Render/Shaggy Star thingy...  - should be faster

• Added alpha support to the store image feature. When you restore a stored image with the Combine mode options, the current alpha channel is now used as a mask. This allows for more interesting compositing and combining.

• a new HLS color picker - learn more about it here
  
  

Learn more about it here