Here's the C3 forum post with more details (also copied below)
https://www.construct.net/en/forum/construct-3/general-discussion-7/spine-plugin-update-153892
The C3 Spine plugin we (Igor and Mikal) developed has been updated with some new features (default animation mix and animation speed). For simple animation playback, pause, switch, it works and looks pretty good with a default mix. Performance is reasonable on the desktop systems I have tested on and recent iPhones (50+ Spine characters with 60fps). Android performance is more of a challenge, only a few characters at 60fps, something to review. Some examples are below. It includes skin changing and mesh deforms. For more details see the plugin webpage:
If you try it out on Construct, let us know, post your results.
https://gritsenko.github.io/c3_spine_plugin/
If you run into bugs, please leave issues on the github site here:
https://gritsenko.github.io/c3_spine_plugin/
Simple C3 example:
