The previously leaked Nest Cam is now official with a Nest blog post to go along with it. The device is on the Google Store and on Amazon for $199 with an expected ship date of June 18th (tomorrow). You can get it direct from the Nest site too. Google says its new WiFi camera is only available in the US and Canada for now, though.
This camera is more or less the spiritual successor to Dropcam, which Google/Nest acquired last year. The Nest Cam can capture 720p or 1080p video and connects to both 2.4GHz and 5GHz WiFi (b, g, and n). It connects to the updated Nest app so you can monitor your home from anywhere (even in the dark), but there's also an upsell for the subscription Nest Aware service. For $100 per year you get 10-day online video history and for $300 per year that goes up to 30 days of history.
The Nest Cam has an adjustable stand and comes with a wall mounting plate, if that works better for you. Keep in mind it doesn't have a battery, so you'll need to power it at all times.