Just discovered that the Geographic Web layer has now been made into a single layer (instead of three sub-layers). The layer still contains the Wikipedia placemarks, the Panoramio photo layer, and the Best of Google Earth Community placemarks. But, they are now represented by smaller colored icons. Panoramio is blue, Wikipedia are kind of purple, and the GEC layer is tan. Also, when you zoom in closer, the Panoramio icons turn into little camera icons to let you know they are photos.
Also, new detailed roads are now available for Slovakia, Croatia, and Slovenia. And I believe Hungary was updated.
Related: Original announcement for Geographic Web layer – more details about the content.