Sounds alot like Dragon Age, espically now that we have perk trees. How do you think the menus will work since you know more about this then me? If you've played it do you think it will be smilar to DA:O?
Only played da:o for a few hours, got past like the first major city and got bored, can't quite remember the level up system. From what they've said, it sounds like you will press a menu button, then from there press left for magic and magical equipment, right for inventory, down for map, up for the skill screen that we've seen in the screenshot. I think that you will be choosing perks at the skill screen, not a menu that pops up when you level up like fo3. The only other thing I know is that when you're at the skill screen, you can "push in to reveal more detail." I think this means that if you click while highlighting a skill, you get a zoomed in view of the perk tree. This combined with Todd's comment about being able to play through the whole game without looking at the stat screen makes me think they've gotten rid of the sleep to level up requirement.
But the level up in the background, choose bonuses/skills whenever you get around to it mechanic is pretty common in a lot of RPGs, wouldn't be surprised if that's how DA works or how Skyrim will work.