We all remember the "cool" Ugin's Fate boosters from the prerelease, even though some of were more lucky than others. At my store I was able to open the 20+ extra we had at the end of the weekend, and not a single Ugin was to be found. I also foolishly trashed the non-Reality Shift, non-rares from the packs, when it turns out they're all actually worth a few dollars.
Well, it turns out my extra packs aren't the only place you can't find Ugin. Magic Online release events have excluded the big Planeswalker from the bonus packs, as well, though they say he'll be awarded at some point in the future.
You can find the full release here.