Here are a few specs that may answer some of your questions. Keep in mind this is all very new, and the factory has only disclosed limited preliminary information at this point.
There are two 3D recording modes:
MVC (1920 X 1080 3D Frame Packing for interlace): Recording Format: MP4, Video Compression: H264 MVC, Audio Compression: AAC, File Extension: .mp4
AVCHD (1920 X 1080 Side By Side 3D which is 960 x 1080 Side By Side 3D): Recording Format: AVCHD, Video Compression: H264/AVC, Audio Compression: AC3, File Extension: .m2ts
You can also record in regular AVCHD 2D.
There will also be software included that allows you to convert from Frame Packing Full HD 3D to AVCHD Side by Side 3D or 2D.
I won't be posting any more this week, but will try and answer more questions next week.