Well it wont be a Z killer for sure, because Pixologic have released Zbrush 2.5 a Siggraph with some killer additions that quite frankly are worth the price of a Maya licence in my opinion, its that good.

How about paint on your textures without uvs and extract mesh from mesh....plus now it has the ability to do everything in 3d space instead of a 2d style

Check out the link, download the movies and wet your pants

https://www.pixolator.com/zbc/showthr...471#post292471

Mudbox wont be a Z killer as such because both parties will be watching each other and making each one more unique, in the long runtherefore benefiting the user...

Cheers
Jay