All,

A new piece of info from Apple:

Final Cut Pro X: Stabilization may cause flipped video or black bars along the edges

Symptoms
When a clip has extremely shaky camera motion, stabilizing the clip may result in an upside down video image or black bars along the edges of the video.

Resolution
Follow these stabilization best practices to avoid upside down video or video with black bars along the edges.

In the Video inspector, reduce the value in the appropriate smoothing parameter (Transition, Rotation or Scale) for the stabilization feature.
Cut the clip with the blade tool in the timeline to remove sections with excessive shake or extreme camera moves.
Use the scale transform control in the Video inspector to crop out the black bars of your stabilized video.

Original Document

If they know about it, they'll be fixing it.
If they post a KB article like this about it, probably not in the next release. But I could be wrong. Good info, thanks for posting!

This would be cool, cause this would mean a new motion tracker!

Good thing we can now export only a part of a video so we can stabilise it in Motion.

YAY!