At Microsoft's Windows 10 Press Event they detailed their new Microsoft Surface Hub. Surface Hub is a 84" 4K display screen with an integrated computer that is targeted at business use. Think of it as a very big tablet. It supports multi-touch and multi-pen and can be used for collaboration.
Surface Hub has the ability to make Skype video calls. You can also write on it like a whiteboard. If you markup the screen you can save it to OneNote and also share it. At the end of a meeting you can tap a button to clear the screen and prepare it for use.
See the below video for an introduction to Surface Hub: