AllEars has a new story up, commenting that the gondola system is currently being tested at full speed and capacity: http://allears.net/2019/02/24/photos-and-video-disney-world-testing-skyliner-system-at-full-capacity-and-speed/ .
There are a number of videos and pictures on the article: you can watch the gondolas smoothly move into and out of the Hollywood Studios station. It looks like everything is running quite well and fairly quietly! It seems to be even quieter than the monorail service.
I’m looking forward to seeing the gondola system in service, and hopefully even ride it! I went to Disney World last December and there was tons of construction throughout the gondola system – here’s hoping that next time I visit the system will be ready. I would love to take some aerial photos from the gondola!