Thanks for the summary, Mainemike!
I'd really like to see more screenshots of the editing controls; but barring that, could you shed any more light on how well they work? I'm particularly interested in how easy it is to, say, boost the exposure or contrast in a photo's shadows or highlights. Photoshop's shadow/highlight adjustment tool is the primary reason I edit photos in it. iPhoto is inadequate, because you can only adjust the exposure and contrast of an entire image; you can't restrict it to just shadows or highlights.
I'd really like to see more screenshots of the editing controls; but barring that, could you shed any more light on how well they work? I'm particularly interested in how easy it is to, say, boost the exposure or contrast in a photo's shadows or highlights. Photoshop's shadow/highlight adjustment tool is the primary reason I edit photos in it. iPhoto is inadequate, because you can only adjust the exposure and contrast of an entire image; you can't restrict it to just shadows or highlights.