Hey Georgina -
If you're referring to the Pan & Zoom feature, it did officially launch but is kind of in a "Phase 1" right now... You can use it with still images only right now, and the p/z controls are automatic, not controlled by you. I saw on another thread that they are actively working on the next phases for it, including keyframe control and [hopefully] p/z on video.
Take a look:
Anissa • @anissat
Hope this helps! Make sure to press "✔ Correct Answer" on this post if this answers your question. Happy Rushing!