It looks like the original publication of the timeline was on Avid (the video editing software)'s Facebook page on March 1 [1]. I haven't seen any publications older than that (yet).
The timeline was later published to their YouTube channel 4 days ago [2].
[1]: https://www.facebook.com/Avid/videos/-the-full-editing-timel...
[2]: https://www.youtube.com/watch?v=upTs-HTThMM
