In these days Sparkfun launched in pre-order the STEM breadboard Arduino Tera. The concept is simple yet efficient; a breadboard - notable the LEGO brick support too - including and Arduino-compatible board to make things easier for Makers and hobbyists creating their own projects. The product is available in three flavours: white, black and pink (pink maybe for Barbie modding 
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https://www.sparkfun.com/products/14082
https://www.sparkfun.com/products/14083
https://www.sparkfun.com/products/14084
Also the price (45.00$) is very interesting, few higher than a bare Arduino Uno. Buying all the components (Arduino, breadboard and some accessory stuff) probably you will spend the same or a little more. It is easy to imagine this will be a success product as well as all the stuff that really simplify the makers' life: less wires and cleaner prototyping.
I have just a doubt on the educational value of the tera breadboard; as much the stuff of the project development lifecycle is embedded inside another box inside another box etc. as much users are kept away from the core of the learning process, IMHO. The real education value that made Arduino boards a long-term top product is just their simplicity: so easy to build that anyone can make its own (with a lot of support on the net) also only with a sheet of paper. I think the strong educational value is giving the possibility to the user to put his hands inside the architecture of the microcontroller and the minimal components making it perfectly working with hundreds of nice projects.
The video below shows the tera in action:
