WOW - i noticed this change yesterday My personal preference is that it just slows down my over image searching experience. If i do a quick image search an am looking for a pic - need to view the site url and most importantly image size. Now if that image is suitable i have to mouse over it and wait and think before clicking I know there is advanced search features to do a search with filters like image size but its just not the same. Might be cleaner, clear results but I give it thumbs down for my own use!
Cool. finally Google Images is "web 2.0" now--not that there is any clear definition of what web 2.0 means but it definitely looks more web 2.0