This morning, Logitech announced that they are going to be offering an Ultrathin keyboard Folio case for the Samsung Galaxy Tab 4 10.1. (androidheadlines.com)
ThinkPad Tablet comes with an optional digitiser pen, a full - size USB port, full - size SD card slot, and mini-HDMI for connecting to external projectors and displays, as well as an optional ThinkPad quality Keyboard Folio Case with optical TrackPoint. (themobileindian.com)
This is their faux leather folio case for the Nexus 6 which also has slots inside for cards, and business cards, etc.. (androidheadlines.com)