Based on the CTWENTY deal posted here
NXT vs EV3
Did you know the EV3 platform is compatible with the NXT platform? The building systems are 100 percent interchangeable. The EV3 software is backward compatible with NXT, and NXT sensors function fully on the EV3 system. We will fully support the NXT platform with sets and software until the end of 2015, so not only will you have plenty of time and support to transition, but also NXT is still an exceptionally worthy investment if you’re just starting out and have no current transition plans. Any NXT you buy today will be useful for many, many years – no matter when you transition to EV3.
How is the LEGO® MINDSTORMS® Education EV3 programmable brick different from the NXT?
The EV3 Intelligent Brick is a completely new component and the most powerful P-brick ever created by LEGO Education. It is built around a faster and stronger processor, which not only increases performance on all parameters compared to the NXT but also introduces new possibilities not available with NXT.
Can you use NXT parts with the LEGO MINDSTORMS Education EV3?
LEGO MINDSTORMS Education EV3 uses the same LEGO Technic elements and RJ12 connector cables as the LEGO MINDSTORMS Education NXT, so all your existing sensors, motors, and building elements will work with the new platform. The NXT rechargeable battery, however, cannot be used with the LEGO MINDSTORMS Education EV3 P-brick, but you can reuse the DC charger.
Can I connect my NXT Intelligent Brick to the LEGO MINDSTORMS Education EV3 Intelligent Brick?
No. It is not possible to daisy chain with the NXT Brick.
Can I program the NXT Intelligent Brick using LEGO MINDSTORMS Education EV3 Software?
You can program your NXT Intelligent Brick using the new LEGO MINDSTORMS Education EV3 software. However, not all of the software features are supported by the NXT Intelligent Brick.