The One Laptop Per Child shows their latest quad-core RK3188 Tablets, 7" retailing for $149 and 10.1" retailing for $199, those retail prices can subsidize the One Laptop Per Child foundation, bringing tablets and laptops to more children in the developing world as soon as possible. The XO Tablets ship with OLPC's latest UI replacement for Android 4.4 kitkat. Parents can unlock that UI and use the tablets as Nexus-like unlocked tablets also. When are all the 1 Billion children in the world going to have full access to education using technology?
You can also watch Giulia D'Amico of OLPC talk to Engadget about the latest with OLPC here: http://www.engadget.com/2014/01/07/olpc-interview/