Legos says their new Mindstorm kit is not compatible with their old kits. The latest incarnation is based more on Technics than traditional Legos.

Wanna bet? I have built lots of kits that combine Legos and Technics, and Mindstorm users are not likely to abandon their past entirely. This innovative group of creators will find ways to combine both systems to make even more complex projects than either Mindstorm system would allow alone.