Every booster pack contains 4 common cards, 2 uncommon cards, 1 rare, 1 reverse holo, and 2 Radiant Collection cards.
That's mostly accurate. I got a half-box for judging and managed to "crack the code", so to speak, of Legendary Treasures.
In each booster pack, you get, in order:
4 Commons
*1 Reverse Holo OR Holo Rare
*1 Rare, Holo Rare, OR Pokemon-EX
1 Radiant Collection card (Uncommon rarity or higher)
1 Radiant Collection card (Common rarity)
2 Uncommons
1 PTCGO code card (for LT)
I'm pretty sure I pulled the entirety of Radiant Collection in my half-box. Not positive, though I know I pulled all 5 Full Arts and mini Melo-EX from it.
Edit: Turns out I got all cards from RC with the exception of #6 Piplup. Dang, Piplup, why must you evade me.
*You cannot get 2 holo rares in the same pack. Thus, if the reverse-slot is occupied by a holo rare, it won't occupy the next slot. Consequently, that means reverse-holos are much harder to get in this set (I think only about half of my packs had them). I feel grateful for having pulled a RH Garbodor in one of mine.
The pull rates for EXs are about the same as Plasma Blast - I got 3 (Keldeo, Darkrai, and Black Kyurem) in my half-box. They appear to have a holo treatment all over the card, instead of just on the picture, like they did in previous sets.
We're also missing the full art golden Reshiram and Zekrom; there is only one per every two cases of booster boxes.
I was told to go shout at WPM when I got home to get him to fix this, but I guess he caught it.
(Out of just under 4 boxes for the main event, 2 gold rares were pulled. In the 5th box opened for the booster draft, there was a 3rd. Sadly, I have neither.)