Sync minecraft world across ipods?

I'm getting a new iPod (I have a 4th gen and am getting a 5th if it matters). However, because of the convenience of being able to whip my iPod out and play in literally 5 seconds I play almost all my minecraft on my iPod. Is there anyway to move my worlds onto my new iPod?

I believe if you back up your iPod Touch 4th gen and when you get your new iPod set it up from the back up of your 4th gen, you'll have the worlds from your 4th gen on 5th.