In the latest Windows 8 releated news, Microsoft will be incorporating push notifications on to the Win8 platform. Other new items discovered are a webcam capture application denoted by the images below. This pictures also show off a bit of the Metro design language that Microsoft will be incorporating across Windows 8.
Another key feature to be implemented is the 'Portable Workspace'. This feature will allow you to run Windows 8 from a USB storage device. To use this feature though, you must have Windows 8 Enterprise edition. It would appear that this feature will not be available to most end users but this has not been confirmed to be exclusive to the enterprise platform.