OLPC is plowing forward with the successor to the XO-1. The XO-4, a 7.5-inch convertible notebook clearly born from the same DNA of the XO-1, will feature a touchscreen and keyboard. As OLPC states, this will allow the XO-4 to be a dual-function device, perfect for non-profit education duty. A Marvell ARMADA 2128 processor will power the device. The XO-4 will use a multi-touch display sourced from Neonode that’s capable of being used in direct sunlight. Combined with the tablet/laptop functionality, this Neonode display should make the XO-4 rather versatile, too.