To date, all changes to Carsurvey.org and related sites have been done unannounced. I’m planning to use this site to let regular visitors know about changes I’ve made, rather than just letting people find out for themselves.
So this all makes sense, it’s helpful to know that the car, motorcycle, mobile phone, and wine sites all run off the same set of code. Certain options are only enabled for particular sites (such as the Members area), but in general, new features and changes are released for those four sites simultaneously.
The airline flights site runs a different set of code for historical reasons. So unfortunately its development rather lags behind the other sites.