As in Oblivion, you can zoom to aim, and the longer you keep the bow drawn the more powerful your shot will be.
(Context: http://www.gameinformer.com/b/features/archive/2011/01/24/skyrim-building-better-combat.aspx?PostPageIndex=3 )
I hope I'm reading this wrong, but it seems to say that... well, if you keep a bow at full draw, it will continue to get more powerful? I don't understand this. I seem to remember hearing elsewhere a perhaps more nuanced discussion of this, where it was said that it would take longer to draw back the bow, and you had to wait for that full draw if you wanted to get a full-strength shot. That sounds more reasonable and more realistic. In fact, in the interest of realism, I think you should need a certain strength (combined with marksman skill--after all, technique is important) to draw back stronger bows. After all, the power of the shot doesn't come from some mystical source--it comes from the archer putting energy into the bow that it then released all at once. If you're not strong enough to put that energy in, you're not going to be able to fully draw that bow (and you're probably not going to be able to string it, either, but that would be going a bit too far, maybe).
Anyway, I hope the GI article was just poorly written and Skyrim isn't really going to have bows that "supercharge" the longer you keep them drawn.
Does anyone have any clarification on this? Thanks in advance for comments/insights.