Apple has just published a White paper PDF titled "Final Cut Pro X for Final Cut Pro 7 Editors."
"Final Cut Pro X is a revolutionary editing application that includes many new concepts and features that are different from those in previous versions of Final Cut Pro. This document?structured according to the major parts of an editing workflow?uses the Final Cut Pro 7 application for comparison to discuss how to complete important tasks in Final Cut Pro X.
Interesting that this didn't happen 3 months ago.
The Help was updated of course as well but it's still not PDF natively and it's now shorter(!).
I'd bet there's going to be one more update before the end of the year.