On Tuesday Patently Apple posted an IP report titled "Apple wins patent for a Foldable Device that could present content in one large image or Split Screen & double as a Notebook-Like Device." Today the US Patent & Trademark Office published a patent application from Apple further relates to a dual display MacBook or iPad for displaying various content, a virtual keyboard and providing a privacy feature for FaceTime.  

According to Apple, in some embodiments, an electronic device displays and allows user interaction with content on multiple displays. In some embodiments, an electronic device displays three-dimensional content using coordinated views on multiple displays.

In some embodiments, an electronic device shares content while displaying a video conferencing user interface. In some embodiments, an electronic device facilitates the display or keeping private of content on multiple displays.

In some embodiments, an electronic device facilitates the display of information from applications using a shared graphical input coordinate space. In some embodiments, an electronic device presents indications of notifications.

In some embodiments, an electronic device presents representations of items of content that are related to content presented on the one or more electronic devices. In some embodiments, an electronic device presents user interfaces including a soft keyboard.

In patent FIG. 5 below we see a dual-display MacBook or iPad that could take on a clamshell configuration. In this configuration, it's more like a dual display notebook, considering that Apple talks about one side having the capability of adding a virtual keyboard.

Apple further points out that in some embodiments, device #500 below has one or more input mechanisms #506 and #508. Input mechanisms 506 and 508, if included, can be physical. Examples of physical input mechanisms include push buttons and rotatable mechanisms.

Apple's patent FIG. 6A below illustrates exemplary device #500 with touch screens 504-1 and 504-2. Touch screens 504-1 and 504-2 optionally display one or more user interfaces that include various content; Oddly FIG. 6P-2 illustrates a side button #622 which triggers the second display to be in touch pad mode.

In respect to privacy when in FaceTime, Apple covers this in patent points #310 to at least #316. This is a very detailed patent with 794 paragraphs in the detailed portion of the patent along with hundreds of patent figures. to explore. 

This is Apple's second patent on this invention wherein they've added a whopping 29 new patent claims to better protect this invention with heavy emphasis on displaying a video conferencing. One example is provided below:

Added Patent Claim #1: "A method comprising: at a first electronic device in communication with a first display and one or more input devices: receiving a request to share respective content with a user of a second electronic device; and in response to receiving the request to share the respective content, initiating display of a video conference user interface on the first display and initiating sharing of the respective content with the user of the second electronic device; while displaying the video conference user interface and sharing the respective content: receiving, at the first electronic device, an indication of interaction by a user of the second electronic device with the shared content at the second electronic device; and in response to receiving the indication of the interaction by the user of the second electronic device with the shared content at the second electronic device, generating, at the first electronic device, an indication of one or more characteristics of the interaction of the user of the second electronic device with the shared content at the second electronic device."

To review the patent overall and the other 28 new patent claims, see Apple's patent application number 20210357169.  Considering that this is a patent application, the timing of such a product to market is unknown at this time.