I understand that ublas development did not align with the 1.56 release cycle and instead you are focused on making 1.57 a solid release. 

I was curious if I could get an estimate of when the development branch of boost would have a version of ublas which passes all of the regression tests.  Also, once that is the case, would I be able to merge the ublas directory into my existing 1.56 local copy?

Thanks much,

-Matt