Basing on the images available on puretime's site:
Positive:
1. The numerals seem to be better defined, like the 5, 7 and especially the 8.
2. Lume seems to be more even than the previous version (said to be grainy).
3. The bridge of the "A" in CALIFORNIA is higher compared to the SF's engraving, closer to gen.
Negative:
1. There appears to be a ring around the CP although it might be because of the shot. Then again, the SF version did not have this on the website shots but had it on subsequent reviews.
2. Lume on the hands looks to be uneven.
Remember, these are preliminary findings on the rep that might change from now until the final watch on Jan. 10. Hopefully, whatever negative points are seen can be corrected by then.