There have been a lot of advances in robotic design in the last few years. Here are some teen titles that take a look into what robots of the future might look like:
Girl Parts  by John M. Cusick - Do you have a hard time talking to girls? Ever feel lonely? David's parents buy him a companion bot to "encourage healthy human interaction."
Cinder by Melissa Marr - Cinder, a gifted mechanic and cyborg, becomes involved with handsome Prince Kai and must uncover secrets about her past in order to save the world.
Eager  by Helen Fox - The Bell family's new robot, Eager, is programmed to not merely obey but to question, reason, and exercise free will. When the ultra high-tech, eerily human BDC4 robots begin to behave suspiciously, Eager and the Bells are drawn into a great adventure that is sometimes dark and often humorous.
The Robot  by Paul E Watson - Gabe and his best friend Dover crack the code to the forbidden laboratory of Gabe's father, unwittingly unleashing T.R.I.N.A., a beautiful blonde robot programmed with a mission that the two boys must put to a stop.
I Robot by Issac Asimov This is the ultimate classic robot book. Asimov explores the idea of robots becoming an intrinsic part of our society. What happens when they try to take over the world?