An internal "High Potential" program in which candidates get faster promo tracks, bigger promos, face to face access to higher level execs, and other perks. They are not supposed to talk about this program, as well, and it is invite only.
Also, if you're a 2 and only at a slightly higher base than I am, you're "somewhat on track" from the conversations I've had, as far as pay per level for us normals :) That being said, I really botched my negotiation when coming in and didn't push my position, which left me coming in at a 59 from an industry position with greater responsibility, and role seems almost harder to change than pay from what I've seen.