The new improvement is that now you can store a selection automatically:
// Will store in cache $("#sidebarNav") with #sidebarNav key $$("#sidebarNav");
This will let you avoid doing $("#menu").cache("menu"), which is a bit redundant. Now by doing $$("#menu") you will be able to store it in the cache and retrieve it automatically. There is also a reload option that you can pass to that call in order to, well, reload the the cached object with that selection:
// Will reload #sidebarNav with $("#sidebarNav") $$("#sidebarNav", true);
You can grab the new version of the Object Cache plugin here.