Sleep!

So, getting Aidan to sleep has always been quite a battle. He goes down at 7 but doesn't go to sleep until 8. Now that he is in his toddler bed he spends that hour roaming his room playing. He has practically nothing in his room and certainly no toys but you know kids, they find a way to entertain themselves. I am now wondering if maybe 8 needs to be his bedtime rather then 7? Maybe he would go right to sleep rather then "play". I am debating on trying to put him to bed at 8 tomorrow night and see if he does any better, not to mention solve my frustration of hearing him roaming his bedroom. Any ideas?