The paper Expression Templates Revisited: A Performance Analysis of Current Methodologies in SIAM Journal of Scientific Computing references the Blaze linear algebra library. I haven't heard of it before, and can't seem to find online references. (The obvious google searches are giving the above paper back.) So what is this library and where I can I learn more about it? 
Blaze linear algebra library?
linear algebra;numerics;reference request;c++
It seems that the library was just officially released on NA Digest. The source code and documentation are available on Google Code.