I'm not sure if Google Adsense for Domains started making changes to your parked domain names, by providing different looks. For example, I've checked one of my domainMotels.com.cn and refresh 3 times (try again if you don't see the new pages).
Please see the 3 different captured images.
Let me know if you see these changes for your parked domain names. If you do, please post your domain name so I can check it as well. I'm curious if this is specific to a certain keywords, category or something else.