I can see several seemingly unrelated events which might be pointing to the US opening up about some of its space technology.
1. The creation and chartering of Space Force as a branch of the military.
2. The declassification of existing UFO sightings, as well as a general stance towards future transparency[1].
3. The infamous "UFO patent"[2] that was granted to the Navy in 2016, describing some pretty bizarre technology.
Who knows? Maybe there's been a breakthrough. That would be really awesome if it were the case.
If you are to believe the patent then it suggests that our rivals (China) are also investing heavily into these types of technologies.
[1] https://www.independent.co.uk/news/world/americas/us-politic...
[2] https://www.thedrive.com/the-war-zone/28729/docs-show-navy-g...