Google 3D Warehouse, now started sending "model updates via email," allowing you to stay informed about the status of your models as they're being evaluated.
"Now, when your model is published to Google Earth you'll receive a congratulatory message. Likewise, we'll also let you know if your model wasn't accepted, or if it was replaced by another model. With these email notifications, you don't have to check your models in the 3D Warehouse to see their status. When we have an update, we'll send you an email," informs Google.
As always, we respect your right to control how much email you get from Google. If you'd like to update your current email notification settings, please visit your preferences.