Designed bottom hat - Power board (Modified LiPo Rider and modified USB hub) with a place I beleive for small LiPo battery
Two USB ports. mini USB for charging, a header for additional 2 ports, a battery connector and a connector for solar panel, header for connecting to Raspberry USB and Power solder pads.
Re-designed Qwerty, top hat
Future Modular design (plus Battery), yep PiZero Sandwich :)