First up is a 10TB update to the Virtual Earth Imagery (which of course can be seen in World Wind). More cities in 3D and more imagery is added and updated. But please, please, PLEASE update Pennsylvania.. especially in this area!
I look at my logs, I know VE devs visit the site so I know they will see this! ;~)
Tisham has an interesting post up about Digital Globe and Google Earth.
Digital Globe trying to push their new acquisition GlobeExplorer as a direct imagery access service. Everything seems to be resolved now, but Digital Globe seems keen to get back to their tried and tested money from imagery sales business model, this time peddling access to global mosaic with a few extra ribbons such as online processing instead of individual QuickBird Scenes
That would put a hold on the Google Earth "exclusivity" to Digital Globe imagery and in reply to Google's "Our Imagery Providers Won't Let Us Share"; Digital Globe has a public, watermarked WMS server of their QuickBird imagery that you can use in World Wind.

And lastly, another Tisham post about adding the Google Geographic Search to the World Wind PlaceFinder via their REST API. So now you have FOUR ways to search for locations, the default World Wind Global Placename Search, the Yahoo! Search, the Global Virtual Earth Search and now the Google Geographic Search. If you still can't find what you are looking for... it must not exist. ;~)
